system
A chat on subreddit /r/wallstreetbets
human
Fills, spreads, and fees are a lot worse than SPX and a lot of brokerages have additional margin reqs for spreads on futures options. Also at least ETrade won't allow you to do multi leg trades, I wouldn't be surprised if that was a feature of the market itself.

gpt
That, and the point was to stop sinning with options and just scalp the futures, not continue to sin in them..