This is most likely the reason the OP is not happy with the decision of Binance, because in the end we know that this is something that exchanges do all the time, they simply delist the assets they think are not bringing them enough profit, now if binance announced that they were going to delist bitcoin or ethereum then that will be a completely different matter, and all kind of conspiracy theories would emerge under that scenario, not that I think it is possible, mind you.
Binance's delisting of some coins is similar to our removal of some projects that we feel are no longer profitable for us. This is completely normal, I wonder why the OP feels uncomfortable with it. We are all here for profit and exchanges are just like us, is OP willing to hold useless projects in his portfolio? If not, he shouldn't be sad because Binance did it and this has been going on for many years and is not new. But one thing, many exchanges are also doing it every day, but why does OP only mention and criticize Binance?
The simplest explanation is that they were affected by this move and they are not happy about it, and while it is something I can get as no one likes to lose money, at the same time we cannot take those kind of moves as personal either, because as you mention binance is also interested in making profits, and if a set of coins are not producing the volume they expected, it is acceptable they decide to take the decision to cut their losses short and delist those coins.