Purely from my own direct experience running live events over twenty years, I'd say yes.
I've organised many live projects for haiku or renga/renku interacting with the general public, and both these genres have been liberating for many reasons, to people who have feared poetry most of their life.
Also my second renga city-wide project was a huge catalyst for people, including one I'll never forget, who had kept an awful secret about abuse during WWII, and opened up for the first time ever in over 60 years.
I gathered over 3,000 verses from mostly the general public, including a former Home Secretary (British Politician), and saw the effect on even more people.
People get put off poetry because of various reasons: it's elitist to them; not relevant; their teachers ridiculed them at school; or they didn't think they could be writers or creative, ever.
Other than Victorian poetry, most people cannot access modern or contemporary poetry, or have no interest.
Often haiku/renga projects provide a gateway into appreciating wider poetries, and act as an ambassador.
Unfortunately there is so much spam haiku, and doggerel labelled as haiku, and bad teachers regarding haiku, that it's an uphill struggle to persuade more people that haiku is a literary art worth pursuing.
There isn't the magnitude of people writing bad sonnets, spam sonnets for example, but the vast majority feel they can pen a haiku as it's only seventeen syllables and nothing else.
A lot of people like the Victorianesque translations of classic Japanese haikai verse, but would soon stop liking the classics if we got nearer to an approximation of how dense in meanings a haikai verse by Basho really was, and no one would bother to read a transliterated version at all.
Over the many thousands of the general public I've worked with over the years, and quite a few writers, the majority have been greatly moved by the haiku I've offered, whether Classic or Modern Japanese Haikai in translation, or Non-Japanese modern or contemporary.
On a literary level there is a problem as we've all read in anthologies by the big publishing houses, because other than perhaps Bill Higginson, hardly any modern or contemporary haiku sources are cited from the haiku world of people and publications we inhabit.
This is surprising considering we also have The Haiku Anthology tomes, and The Essential Haiku etc...
So re the general public, it's been a great success via my experiences over two decades, but re the senior literary scene, there is something missing, and it's the same problem.
What problem? Well, in just speaking to one U.K. nationally famous poet, she said she was under peer pressure to write seventeen syllable ditties, and had bowed to that pressure. Actually Tito did get her to provide a sound bite on one of his BBC Radio programmes, but time permitting, it was a very short sound bite. Most radio shows, from Stephen Fry, to a recent one I was contacted about, only want shallow verse posing as haiku, over the airwaves.
Many mainstream poets who attempt haiku, fail abysmally, and that may be the main cause why haiku isn't socially relevant amongst the mainstream literary scene. They fail to see the form because it's not a thing
to do by the numbers as they presumed it would be, and we see some really bad poetry being provided by poetry experts, and so it shouts out that haiku must be bad.
More mainstream poets are jumping on the bandwagon on teaching haiku, badly of course, in most cases, and providing childish, not childlike, verses, and the same in some areas for renga, but oddly enough not to the same extent.
As you'll know, globally famous artist Jeff Koons, and highly respected poet, and performance poet, Bob Holman amongst others, created American Renga, alongside a senior Pentagon military officer, who penned verses after the 911 attack which included the Pentagon building itself. The project was a huge success with big trucks trundling across America.
So yes, haikai verses are extremely relevant to the public, and certain mainstream poets, and the ways haiku and renga have taken off have never been healthier. Sure, some of it is seventeen syllable poor poetry, but amongst that, there are diamonds, and not just from the haiku world we inhabit.
Alan
Pop Quiz (single question):
Is haiku in English a socially relevant poetics in the 21st century?
instructions:
Please answer "yes/no" to this question, and please provide a brief rationale and haiku examples to support your (yes/no) answer and statements.