That part is worth the silliness.I feel like I've gotten better the last two years
Yeah, writing here can feel silly sometimes. There's not really any money in it (though it sounds like a few make that work), and by the nature of it, it won't ever be considered "serious" work. Though some stories I've read here definitely qualify.
But, if you have any thoughts of someday doing "serious" writing, this place is great practice. Both for writing skills and some of the aspects of managing an audience. And it sounds like that is working for you.
The other thing is, one of the best pieces of writing advice I've seen, from an actual selling writer, is (my own paraphrasing):
Don't aim for great. Aim for good. Nobody does anything great when they are trying to be great. But sometimes something intended to be good turns into something great. Sometimes it turns into garbage, but you have to be willing to accept failiing if you want to be good and have a chance at being great.
There's a lot here that is good. And a few things that are great. Even by the standards of "serious" writing. This might not be an audience prepared to give "great" work that is "serious" the reception it deserves, if it happens, but a few people will know it.