Oh it still blocked up, but it used to be even worse. My dad was thrilled when the gel technical pens came in.
I use Poscas now, which are great in terms of flow/coverage, but have the splatter factor. At least I can get rid of that on the computer (or with tippex-which handily disappears in scans if you don’t apply it lumpily- my school art teacher would be horrified)