For _your_ classification it's unacceptable. The OP seems to have anticipated this and mentions you can fine tune it for your use case. Did you try that?

I don't think the point is to displace Jev, but to show it's possible to build an MVP on open weights without years of work and millions of dollars.

Why (presumably) an engineer would dismiss exploring a lightweight, custom alternative to locking into a fashionable PaaS, I'll never know.