Shouldn’t that be a “oh well, sucks. but a sale is a sale” problem?
“A sale is a sale” works fine when both sides to the transaction are well-informed and acting for themselves. When you are selling assets for someone else’s benefit, you generally have extra obligations to them, because otherwise you don’t really have an incentive to achieve a good price. So courts do generally have some oversight over sale of the assets of a bankrupt estate, to ensure that the trustee is not short-changing creditors just to get the job done quickly.
A complicating factor here is that the Sandy Hook families (who as far as I know are the large majority of the creditors) also supported the sale.
I suspect the large majority of people who use the Fediverse don’t want to be publicly trackable in this way. It would be fine for me if the people who did stayed on Facebook. To me, it’s not a goal that 100% (or any %) of Facebook users move to the Fediverse. What is important is just that the Fediverse has a critical mass of activity that it doesn’t completely die.
Also, maybe it’s just me (I’d be interested to hear what others think) but I think trying to track down old school or college friends is really something people only want to do for a few years. By the time I hit my mid 20s I didn’t really care anymore. There are people from school I sometimes think about and wonder where they are now, but ultimately, if I never tracked them down and they never tracked me down in the years since, the connection was clearly not that important.