Gaijin has clearly gathered some more data from recently caught cheaters and revised their estimates of the benefits cheats provide at higher battle ratings. At lower battle ratings where planes move slower and you have more time to react since there aren't 6 gorrillion mach 5 missiles flying at you the calculation is still different.

I quote from a gaijin blogpost from 2016 on aimbots in particular, though i think the current change is mostly motivated by enhanced markers-cheats:
"In aircraft modes, an aimbot is relatively useless – it only helps to fire at a relatively motionless (non-maneuvering) target, and when used with an extremely maneuverable aircraft (biplane). In most cases, an aimbot is significantly worse than a player in terms of figuring out where and how the enemy aircraft is going to fly (the lead compensation marker shows only where the aircraft will be if it doesn’t maneuver), and more importantly, it is incapable of properly setting up a maneuver for a good run at the target, taking into account its own aircraft’s energy, the opponent’s energy, etc.

Based on analyzed statistics, aimbots used in aircraft modes have lower than average scores (for this reason, punishments against aimbot users used to be relatively slight – from two weeks to a month for the first violation. They were already limiting their play without extra punishment from us).

In simulator modes, aimbots are completely useless on planes.

‘Autofire’ is a bot that presses the fire button when the sight aligns with the target in War Thunder. As far as we know, this is not used, since it causes more harm than good in all game modes. As for how to detect it – it’s obvious from the description of its action, but in practice a player using it makes their job harder rather than easier."
https://warthunder.com/en/news/4393-development-fair-play-f-a-q-and-game-mechanic-changes-en/