@ABCbits: Thanks for the context, I vaguely remember that part of the blog post. But I think this isn't that important. What I think is, to say it bluntly, that Lopp and those agreeing with him are simply greedy and want to contract the supply even more, for Bitcoin to moon even faster. We don't know if (most) lost coins are really lost, and thus we don't know if there was a donation. So if the coins return to circulation we also can't say that this was a theft.
You got it. They've spent too much time on X and similar platforms and their brain gets corrupted by shitcoin propaganda. Occasionally you see people these days also doubting the security model of Bitcoin precisely because of this, even though there is yet not a single sign that it will be a problem. Anyhow, another unfortunate (even if minor) side effect of this kind of locking is that it would put an end to those happy "I've found Bitcoin in a 10 year old wallet" stories. 
I love those.