Maybe, but, after introducing lots of crazy questionable decisions in the last 4 seasons, I don’t see why The Last Problem should be the one where some people would be like “that’s it, I hate this episode”, especially in comparison to other bad episodes.
I don’t think the point of that episode was to leave some room for speculation in the future. It’s more like Twilight confronting her fear for leaving this part of her life even though she doesn’t want to. I think most of us have been in the same situation as Twilight. What if you don’t see your best friend anymore because of distance issues? What if, after you start to work in another city, you don’t see your best friends as often as you want?
However, we have advantages. We have social networks, we have phones, we can ask if our friends are available. A part of us is afraid of the future. But we can get better. In the case of The Last Problem, Twilight made a day for herself and her friends just to see each other occasionally.
Pinkie has a kid. So what? I don’t think the final episode of a TV show has to have the main characters having a family to be good. That’s a very 20th century view for a TV show where the main characters rarely show some love interest (and, after the events of The Last Laugh, it kinda makes sense Pinkie in The last problem). That mentality also reminds me of very few things I’ve seen in Naruto and Boruto. I don’t think Friendship is Magic needs that approach. Not every TV show has to last forever, even in generational terms. Twilight’s story has finished. Don’t give her the Boruto treatment. Let her sleep. We need new characters and new worlds, and thankfully we got many of that in G5, but that’s another discussion.
When an episode like this made me cry right at the last 3 minutes, I can’t think this was a bad episode, especially when the last 4 seasons had so many problematic episodes. After all, this specific story works because it’s an epilogue. It’s the ending, so it makes sense why Twilight would be worried about the future in the first two acts and then making a good choice in the third act.