Two things can be true at the same time.
The band are irritating. And even if they weren't, if they were drowning out anti-Chansiri songs, that's it. Off they go.
It's also true that our fans don't create a great atmosphere. There's a post above which notes that it was flat because the team was flat early in the second half. But the best home crowds make noise and lift teams when it's dull. Ours don't.
And never have. There's nostalgia for the early 90s. The atmosphere in the early 90s could be pretty much non-existent if the team wasn't playing well against mid or lower table opposition. Nothing unique to us in that. But it's a fact worth facing. When Hillsborough is rocking it's great, but overall we aren't the loudest or most inspiring set of home fans, and never have been.
There are ways in which fan noise could be encouraged, including zones, support for fans groups etc, and I hope the new owners will be interested in that.