I 100% respect that. It sounds like you didn't jump to that conclusion in 1 Phoenix project over a month, though...and when you say "my tasks" the situation may have been that you weren't churning out "normal" CRUD apps that Rails is so good at?
For sure its a lack of careful thinking and consideration of trade offs I'd take any issue with...it sounds like you didnt come to those conclusions out of emotion or a deep yearning for something new.