This is a very patronising article.

Do I approve of throwing tomato soup at Sunflowers? Nope.

Was Sunflowers damaged? Nope - the frame was glazed.

I don't know if all these protests have been similar, but I think I'd have heard if any of them had damaged important cultural heritage.

I don't see why the author thinks that "Just Stop Oil" protests in particular are tantrums. The same analysis would make any protest, about anything, a tantrum. So he thinks protesters should instead come up with constructive solutions, instead of just whining that they're not happy? Cool, give them some civil servants, so they can build a policy-development team.

[Edit] My reaction is that this article is itself an enraged tantrum.