I think that 5 years of work needs to be rewarded while I understand the frustration about the bugs I think that this is being blown out of proportion, it's kinda unfair how much Kaliyo team is being attacked, believe me when i say that no one wants to release a buggy product, it's more complex than it seems.
In my humble opinion GOOD work and GOOD practices should be rewarded, while poor work and bad practices should not be rewarded. A lot of the issues with this game are a result of the latter (such as not testing the game properly – just look at how many of the reported bugs are early in the game).
Also, “5 years of work” on its own means nothing. Remember Anthem? That too took years to make... Just because “AAA” companies release broken games doesn't mean that everyone should follow their example.
Other thing to have in mind is that they are not "pros" yet in game development, more when we talk about Game Design, their previous game was in EA for years with feedback from the community that helped shape the game for the better. Now with Arenus is going to happen the same thing, the feedback made that the "lose" scenes are no longer a game over and is not going to be the last thing to be reworked. If you are in the discord server you can see how much they are listening to feedback and looking ways to implement it.
Arenus is supposed to be a complete game, not an early access title. Also, as you yourself pointed out, this is not their first game. They have YEARS of experience using RPG Maker, which makes some of the bugs a lot more difficult to excuse. As far as indie devs go they are pros.
Also, they delayed the game because – supposedly – they needed more time for polish and bug fixing. Because they didn't want this to be like Cyberpunk (said so in a Patreon post). I can only imagine how many more bugs there would have been if they had not delayed so many times...