Contractor is set to paint my walls tomorrow, these caulk lines I’ve been told are really large and paint alone won’t resolve the gap between the baseboard and the wall. Contractor said this would be resolved by the painters
Short version: no, this isn’t good work, and while it will be improved by paint, it will always look somewhat crummy.
To step back, that line exists because the baseboard dropped lower. (Flooring changes, shorter base, whatever.) If you had to have that height of baseboard, the bottom of the wall should have been prepared better (old caulk scraped off, drywall mud to smooth it).
But here’s the proverbial rub: what does your contract say? If you don’t have specific language about this, you might be out of luck.
Solution 1: get taller baseboard and cover that line.
Solution 2: have the painter scrape and mud the line, then recaulk and paint.
Solution 3: paint over it and ignore it.