Only in part - and it would certainly not be “just fine”. Edge is pretty nice nowadays. It’s the tactics to promote it as the default - now and in the past - that have drawn so much scrutiny. And IE did used to be objectively inferior to the competition.

I’m saying the people at MS promoting this in this particular way are, well, dumb.

As a developer targeting Edge is fine, there's not really any significant difference between building a page that supports it versus any other Chrome derivatives.

But as a user wow is it the most trashy and abusive program I routinely encounter. Start it for the first time and you're confronted with tabloid news and advertising. Sponsored links are mixed into your frequently visited sites by default. It injects itself into your online shopping and sends all your images and browser behavior to their servers for various weak justifications. You can turn it into a passable experience by scrolling through and configuring something in nearly every single settings tab, but then they just ignore you and inject new advertising sidebars or icons in a random update. Keeping it restricted to "just a browser" requires constant vigilance. It's clearly first and foremost just an advertising revenue funnel for Microsoft, which is completely pathetic of them. At least IE was mostly just a browser even if it did that pretty badly most years.