Few things about trees in cities: (1) tree roots ruin sidewalks because they upend that stuff; (2) tree roots get into and ruin infrastructure, (3) not every curb can sustain a tree, so these could fit where a tree could not; and (4) they damage stuff when they fall over in storms.
Reddit is going crazy with the bans. A perma ban can result from something as simple as saying something like “I hope the consequences of not vaccinating are more deeply suffered by anti-vaxxers than by people who are not vaxxed from an allergy or something”. After all, that constitutes “hoping for violence/death”.