Like you, at first I thought some features were sleazy, like the coupon. But after using it a bit, I like it: whenever I'm going to buy something on Amazon or somewhere else, I having a big popup telling me it's cheaper on this alternative store OR that I forgot to clip a coupon on amazon is REALLY helpful! It's like shopping.google.com right inside your browser, on a push basis.
It's really hard to make a product that's satisfactory to everybody. You may hate the coupon feature - but I love it. I'm not a big fan of debt to finance consumption, BUT maybe there's a student out there who needs that to splurge on cheap hardware during blackfriday and make a profit by parting it out on ebay?
Also, a feature that's just "meh" can be safely ignored, like the various things Word can do: no, you don't have to display every toolbar if you don't use them.
If the feature is worse than "meh", say if it goes to far, Edge can become a source to made a free software browser, like Chrome became chromium for people who value their freedom and privacy.
And considering all the naughty changes Google has been adding (ex: to make it harder to do ad blocking), maybe that's for the better: I'd rather have Microsoft employees fix the codebase and backport features from upstream, than volunteers: this frees the volunteers so they can concentrate on the more important (and easy stuff), and leave the boring stuff to Microsoft.
Is it more complicated to have chrome -> chromium -> edge -> edgium -> something you will be able to use?
Yes.
But so what? As long as it works, I don't care much.