Valid point, but leaving thins as is does not seem like the optimal solution. Maybe the mods could occasionally post examples of removed spam/bot content, for transparency and awareness. Leaving this to random users can end with more mistakes and actual abuse.

Also, the troll/bot comments and discussion around them will less disturbing outside of the intended context (where they were posted to cause disturbance or misinformation).

no idea why

Because it makes initial connection much slower. Dumb switch - you insert a cable and it works. STP-enabled switch: you insert a cable and it takes a while until the port is enabled (unless you do extra configuration, appropriate for your network topology). This is annoying and for inexperienced users it could seem like the switch ‘does not work’. It is easier to sell a switch without such a feature enabled by default.