imo having product founders / developers answering support questions is a super strong moat. I am surprised that many big SaaS just throw customers around with low tier outsourced support who don't actually know the product, or chatbot that just regurgitate the answer from FAQ page (which usually doesn't cover the customer use case), or worse, deliberately obscure link to get support in hope to reduce their customer support workload.
I run a few small SaaSes, and I try to reply customer email within 24 hours, and usually they are suprised / delighted by my response, and most stayed, or switched away from bigger competitor to mine, after initial enquiry to my app.