1. That's because data was crunched (Statcst) and Springer covered the ground needed to cover (he covered 84 feet when he needed to cover 82 feet or something to that effect) and had a 75% chance to catch the ball (because, supposedly, the ball had a spin which was taking it to LF ergo the weird trajectory by both Bo and George). If Bo had 80% chance to make the catch and Springer had 75% catch, it is still common sense to give it to the CF. If Bo had 100% chance to make the catch, then he let up, then fine maybe we rip him for it. But there was no way running backward into shallow CF on a low pop fly gives more % chance to a SS than to a CF assuming both can get to it.
2. George was also calling for it, you can visibly see it in the replays. I doubt Bo heard it however considering the arena and the noise level. George also saw Bo wasn't stopping and veered away in a defensive slide almost.
3. This wasn't his first time doing this this year, and most times everyone else makes concessions for him whether he makes the play our not. The OF run against Teo/Springer in an earlier game (NY series I think?), the running to 1B to make a pop out when it was in Vlad's territory and then getting annoyed with Vlad for making the play, and there was another collision with someone earlier in the season where he ran into LF to make a play.
I don't hate Bo, he's one of the more consistent players offensively year-to-year and has good first moves + range towards balls in play to SS (his drawback being his his arm) but you can easily see the difference in going for those plays v. not by watching the ATL/Phillies match where Swanson does make a play that Bo wanted to make in no-man's land (whoever was playing CF had no shot to get to it) or the SEA/HOU match where Crawford gives up on a ball that is going to no-man's land because JRod was running right at it and that he'd make it (similar drop point to where Bo/Springer collision happened, maybe a bit closer to the infield but Crawford broke to it and then stopped realizing he might or might not make the play, but CF had a better shot at it due to the angle).
Its a fine attitude to have, in general, to be the dude that carries the team and all that but not at the cost of potentially losing games and/or injuring players. The game loss wasn't on him, either way. That was a bloop. You roll with it.