Whatever is important to you, probably not all that different than any other job.
Depends a bit in what role as well but you can expect less guidance which may make it more difficult if you are a new grad.
The one question I'd ask is what your day-to-day will look like, the answer is probably "a bit of everything, young startup, you will grow with the company, blahblah" but at the end of the day there is something you'll have to do and perhaps in startups more so than in other companies that might be things like customize this powerpoint of our pitch for each prospect which may get rather boring.
I think you have to look at it from the other side, you built something and now are looking for people that use it.
What you'd want to do usually is to find people that have a need and then built something to solve that need.
So starting from that, who would want to use your service (expecting parents?) what do they do currently to solve that problem (naming books? other websites?) and how do they find that solution.
Once you clarified those questions in a lot more depth than you think necessary will it become clearer how to reach those people as well.
I don't think you necessarily make more as developer, have a look at the market and see what you can get.
Especially now that more companies are moving to remote you might be able to do better in either role.
Having said that as developer it will most certainly be less stressful so you might go that route just so you can free up more space to start writing now.
In a way that is the same point, just in your case you have already existing customers.
But if you don't have a look at what other companies customer are doing and optimize for a segment of those can certainly be a good approach IMHO
If you don't like the act of writing code then you def don't want to go down the developer route.
I agree with some of the other comments that looking into product management might very well be worth it and your background in investment can help with that if you find a company in that field!
His argument is basically it's not worth doing it "Because vast part of 21st century emissions come currently poor world".
That seems like a rather odd stance to me, effectively he is saying it's too expensive for us as a rich country to do and at the same time expects poorer countries to do it - how can they manage that if it's already too much for the richer countries?
I really don't see the issue, how can this be seen as a scam?
Even if the persona is used as a marketing tool it might not be great but also...so what?
If you want a career then I'd start backwards: Where do you want to be? What can you imagine yourself as? And then works from there what you need to get there.
And likely what you have to do is upskilling somehow before you can even apply, you can probably take a lot of learnings from your past 10 years and apply them to your new role but there are likely a few things you have to learn first.
On the developer point specifically:
Can you not imagine yourself as a developer because of self-doubts or because you really don't like that path?
If you already didn't like it 10 years ago you might not like it now either but if it's just because of doubts whether you can do it then it's a different story.
It's certainly also going to be difficult to get back into a developer role but with the current job market it is probably still easier than most other career options IMO
I can't imagine there are even many (if any?) blockchain games where it matters.
Are there really so many games blocked on Steam that can now go towards Epic?