I agree, the options for building since this was done have been reduced so significantly that ARK is becoming a more viable game for creative builders. If this was a “fix” it was half-assed and should be addressed properly. So many fixes coming in the next patch that have no impact on the game whatsoever (fixed a floating tent in an npc camp) yet this gets overlooked/ignored.
On a more constructive note; in the last patch it was stated that the support provided by support beams has been “reduced.” Upon closer inspection this meant the beams did not add 20 stability to the next piece (i.e. if placed on a wall with 100 stability they used to give the ceiling connected to it 120) they just transferred stability (i.e. if wall was 100 then ceiling is 100). If this, for some reason, is causing issues for PvP, or something else entirely, I have a couple of suggestions that might push us in a direction that makes everyone happy.
First, if infinite building is the concern then at the very least have diagonal supports transfer stability -10 to the next piece (i.e. 100 stability on a wall transfers 90 to the ceiling). This will allow builders to still have an extra tool in their box for complicated builds and kills the infinite building problem at the same time. Vertical support beams should remain unaffected and act like any other vertical piece in the game as all they provided is alternative snap point on edges when compared to normal pillars.
Second, if this specifically has to do with PvP then disable them in PvP only until you find an alternative. PvE servers are all about building cool stuff and again you are taking away too much with this change. PvP bases, for the most part, are fortified messes that can easily get by without them.
Please for the sake of keeping this game alive stop ignoring this and DO SOMETHING!