First of all, even people we know really well and think that they would never hack, they can be hacking, I know from personal experience. Secondly, lag is not a valid reason for a ban, unless you get 1 million ping in which case you might be ping spoofing (no, it's not a meme) or some badly developed anticheats may detect you for blink, which is essentially a manipulated lagspike. There is no such thing as clicks getting through all at once due to lag and the anticheat detecting it as autoclicking and banning you immediately. Thirdly, there was a case a while ago of a streamer being false banned from some big servers, such as Hypixel; it was later discovered that the problem lied in his PC and the hardware in it, and considering some other calculation/input related issues with hardware, this leads me to thinking that some setups may be more at risk of false banning. These false bans are however somewhat easy to spot since the anticheat flags do not follow common patterns followed by actual anticheat bans. Hope this helped.