I like the implication

Then you're reading it wrong. My comment says nothing of the sort.

The implication here is that it's better not to publish open source code because somewhere down the road, you might make a decision that some crowd doesn't like and they will start messing with your shit. If you do your own thing in private, hand code it if you like, vibe code it if you like, you don't have any problem and you're safe. If you write private code for your corporate overlord, no problem, you're safe AND you're getting paid. But if you share your stuff, and you're unlucky enough that it becomes popular, then some internet mob might harass you at some point.

In that context you'd be pretty stupid to donate your time and energy to anything open. You'll get maybe 10 contributors in a decade, willing to help you along the way. But one misstep and you'll get hundreds of haters. The game just isn't worth it.