I think they have better game development quality than most.
1. Very few bugs on launch, games launch complete with complete software - this alone sets them apart
2. Innovative game design that is copied by most of the industry
3. Details in the games, like the combines in totk, that are entire games themselves, very few developers are smart or dedicated enough to allow you to attach a bat eye to an arrow and turn it into a heat seeking arrow just for 2 seconds of novelty in a 100 hour game
4. Technical prowess - Nintendo have pulled off some miracles in their day on underpowered hardware, but the fact that TotK performed like BotW in game but also had a physic engine that could be its own cad machine with ai logic, is something nobody else in this industry would even imagine to accomplish, for example BG3 is VERY similar to DOS2, but TotK did not actually rest on BotW here, BotW and TotK are two very different games in moment to moment gameplay because of the physics, so TotK does not feel like an xpak. ER is closer to DS3 and BG3 is closer to DOS2 than TotK is to BotW. They don't just let good enough be good enough, they go beyond
5. Xenoblade chronicles are the best jrpg series being made right now unless you count clair obscur and it's not even close. Atlus is second but honestly those games are very similar(metaphor had some good evolution, but come on, these are baby steps) with each xenoblade feels unique.
6. I'm also a big fire emblem guy and XBC + Fire Emblem are some of the absolute best reasons to be Nintendo fans.
7. Mario Kart is super fun and everyone in the family loves it, Nintendo also appeals to non gamers so Nintendo games are one of the very few times I can share my hobby with my family
8. Nintendo often allows for dual controls even games that you wouldn't think needed them, to allow another user to feel like they are helping. This is a cool thing that I don't want to see die in our industry.
9. Nintendo raised me and started my love for gaming
10. Most of the old games are also available on their console and the price of the yearly Nintendo sub is very cheap, I have only paid 25 dollars for it iirc and can play all old Nintendo games at my whim, and they also let me save scum with uploaded save files(not every console allows this just fyi)
So even if they aren't the absolute 100% best dev, they really are up there. They are one of the best, and as a gamer, games are all that matters to me. Metroid, Zelda, Smash, Mario, Kart, Xenoblade, Fire Emblem, Kirby, DK, Animal Crossing, Party, Mansion, Paper and to some Pokemon are all good reasons.