Not quite. Inkscape does solely vector editing and I'd seriously argue Inkscape lacks anything "modern", specially with its latest release.

I really wanted to like Inkscape, though I found it very frustrating to use, the UI was clunky and felt really unpolished.

Affinity Designer on the other hand is really nice to use, and didn't do a bunch of weird stuff exporting SVG files.

For the longest time, the Mac version of Inkscape was effectively unusable due to a horrible UI port. I don't use Mac, but IIRC they did announce that it was revamped not that long ago.

I wonder if that hurt its adoption since a lot of graphic designers use Mac, so their first impression of Inkscape would've been very poor?

I have really enjoyed the Affinity apps. Really the only competitor left to Adobe.

Unfortunately they have only a fraction of the resources of adobe and their development has slowed significantly over the years.

Their product is just too cheap. It might as well be free. They charged something like less than $50 for a one time purchase and only required a paid upgrade recently after like 7 or 8 years.