This feels like one of those things that gets touted but doesn't turn out to be true because no one bothers to check back up on it til much later (kinda like the Komodo Dragon's supposedly toxic saliva - which I believe was found that no their saliva has like horrible bacteria in it because they're literally eating the ass out of like dead water buffalo). Why wouldn't it just eat the damn insects (and/or the frogs)? I'm guessing it doesn't eat the frogs because the frogs might be toxic to them so they just ignore them and someone was like "whoa the spider is just chilling and there's a frog right there!" And then reddit gets involved and then we get people getting info from memes because someone got a pic with a bigass Tarantula about to eat a frog and was like "no, they're friends!"
Next up the GOP will be trying to make laws banning people getting species reassignment surgery to become "Transtulas" from competing in sports and its because the gay frogs went all Queer 8 eyes for the Spider guys.
Then later we find out the spiders just like tripping balls and watching Charlotte's Web.