That seems malicious, never attribute to malice what you can attribute to incompetence. Valve’s non-standard employee structure means nobody has to work on TF2. There are a lot of other fun things to work on at Valve, not some decades old game that doesn’t make a ton (relative) of money anymore. This is probably the biggest flaw of Valve.

play bot? I’m not quite sure what you mean, but ya all sorts of bots are flooding TF2. There are the normal aim-bots, but they also spam noise makers, voice chat, and text chat. They will also try and vote kick and normal player.

TF2 is in a near unplayable state. Valve has neglected it and as a result it’s not hard for people to bypass the anti-cheat. This has resulted in bots overtaking the game. This has been a problem for years, but there have been some recent pushes to get Valve’s attention. First was #savetf2 which resulted in Valve tweeting that the “heard us” and had things planned. Well nothing happened and now we’re trying again. #fixtf2 is the newest push and has come with extra steps from the community. Many people, including myself, have switched our reviews of TF2 to negative to hopefully get Valve’s attention.