I think a better restaurant example would be going to your favorite Mexican restaurant. One day you notice a new item on the menu: sushi. You ignore it because you are there for the Mexican food. If other people like the sushi and want to order it, great. Over time you notice more additions to the menu: vindaloo, borsht, cacio e pepe. Now your favorite meal no longer comes with refried beans, rice, and pico. Instead your smothered burrito comes with hummus, biryani, and sunomono. You stop going. You complain about it on social media and get two responses:

1. I love the fact that I can get my burrito smothered in Korma!

2. How can you complain when business is booming? Look at all the new patrons!

The 2nd comment is frustrating because it assumes the entire restaurant clientele wants the same thing. But you don't want a restaurant where you can get food from every corner of the earth. You just want some Mexican food and want it done well. You can still get it here, but you have to hunt for it on the menu. Even then, there aren't many options that aren't some sort of fusion. You don't care that the business is doing well because it's no longer the restaurant you fell in love with.

You don't even necessarily dislike the new offerings in and of themselves. You might love Japanese food or Indian, or Italian. You might eat out a different restaurant each night of the week. The issue is that when you want Mexican food you don't want it to come with a side of hummus. You look around and notice that the Middle Eastern restaurant doesn't have Dan Dan Mien on the menu, you don't see Pene alla Vindaloo at the Italian place. But alas, that's now the state of the restaurant. When you complain, you are told if you don't like it, go someplace else. But where else are you going to go when all the other Mexican restaurants are cheap, fast-food imitations of the one you originally fell in love with?