I hope I don't sound as an AI, but: it depends.

- Are you looking to build a career around that, and try to get linked in? Then yes, it's worth it.
- Are you fine knowing that you'll attend in a place where the people become targets for $5 wrench attacks? Then go for it.
- Is there anything you believe you can't find out elsewhere, except in such events? Go.

But in my opinion, it isn't worth it. Let alone, most of these "blockchain events" are organized by people who want to promote their shitcoin agenda.