Interning at a bootstrapped, profitable Fintech startup, but ...

Stepend is low af. I am a product designer, fresh out of college ( technically still in my final sem), had been following the company for a while. Turns out understanding and admiring sustainable and profitable business doesn't equal good pay which is competitive. It's around 20k for 3 months and their full time offer would be around 5-6lpa. But it's completely work from home. Has very experienced people , easy to talk to and approachable. Is this a good move to start my journey here ? Got offered a role more of a generalist starting with marketing to understand the work. Most major banks are a client.