I totally get this. I don't have Illustrator, but occasionally I get Illustrator produced SVGs and they remind me of HTML produced by early 2000 Word.
And I hate Inkscape with a passion, mostly the UI. I like exact coordinates for doing technical diagrams, and Inkscape seems to make that really hard. I have no issues with UIs that have a learning curve, and have previously gotten used to InDesign and Blender fine. But it seems like I'm fighting Inkscape all the way, only to have the output be of low quality.
What I actually use now is TikZ in LaTeX + dvisvgm, which I then pipe through SVGO. Super happy with the results, although writing TikZ isn't exactly smooth either. And LaTeX is a whole different world of pain and annoyance, so using it for just SVG seems wrong. But TikZ/PGF is pretty mature, and dvisvgm has a great, clean code base.