That's hyperbole. Affinity products are quite close. Artists with more of a "hacker" mindset who can improvise a bit around missing features can also get by with open-source alternatives like Inkscape and Gimp.
Oh, and the new-user friendliness of Adobe products is abismall. I've never seem something more user-hostile than Photoshop - it imposes a brain-breaking mental model copied from the era of dark-room photo-effects or smth. and doesn't accept that everyone wants vector + raster in the same one software.
If the industry would not be so high-pressure and artists would have time to learn more tools and play with stuff instead of crunching to meet deadlines, stockholm-syndrome-software like Adobe's would die off... it only survives because that +10% productivity + extra 15% productivity for using the same tool as all the others and all the examples give overwhelmed and overworked artists an extra 25% they can't say no to!