No, you are making things up. That cannot happen unless the homeservers are not configured properly. If you don't have anything to back that story up, I suggest you slow down on making matrix look bad
Unfortunately I cannot find where I had read that, might've just misinterpreted discussion about delays as about dropping messages / interpreting messages as answers to questions I didn't actually post... Sorry for the unnecessary negativity!
in dzaima’s defence they did hit an instance here where messages were effectively dropped - but only because the matrix.org db was so corrupted it incorrectly quarantined them (and even then, they can be flushed through). corruot db is effectively an extreme form of misconfiguration, i guess.