It really all is changing. No longer are ONLY primes sharp and fast. Look at the Tamron 35-150mm f2-2.8 and Samyang 35-150mm f2- 2.8 zooms, both with excellent IQ , fast apertures, and versatility, all in one lens, without having to carry separate primes.
Almost gone are the days when ONLY primes ruled for image quality.
Personally I have a mix of primes and zooms in my kit. With my best zooms being able to fully resolve the high megapixel sensors of my 50mp Sony A1 and my 61mp Sony A7RV, I am just as likely to reach for one of my excellent zooms as I am to reach for one of my excellent primes for my professional and personal work.
And if I am traveling for a foreign shoot and have limited gear I can take, I am more likely to take my zooms and maybe just one or two primes that might be specialty lenses or a special focal length for astro or architect work.
Here are the MTF- Standard Sharpness test results for over 200 fullframe E-mount lenses from Sony, Sigma, Tamron, Samyang, Zeiss, Viltrox and others, all tested on the high pixel density 61mp Sony A7RIV, the toughest test of resolving ability of these lenses. .
Notice in these test results that more zooms are testing as Outstanding, Excellent and Very Good, now equaling the sharpness of many of the best primes, which used to have the top ratings all to themselves. Times are a changing.
I love my fast, sharp primes, but I also love my sharp, fast and versatile zooms. Today's best zooms aren't your father's zooms.
https://sonyalpha.blog/2019/11/10/which-lenses-to-maximise-the-potential-of-the-sony-a7riv/Cheers and best to you all.