I'll repeat - they got half of the number of votes that the SNP did
You don't have to repeat it again, you've already repeated it several times, and it's of no more significance or relevance than it was the first time you mentioned it.
The system is the same for every party. Even your "clown" Greens managed two Constituency wins, and even then they still gained a significant number of Regional reps.
Reform didn't manage a single Constituency, so this automatically places them at an advantage re Regional representation.
What "vote share" they tallied relative to the SNP is wholly and utterly immaterial, because you are comparing apples with oranges.
The SNP have support both broad and concentrated enough that they cleaned up on Constituencies. Reform couldn't take a single one because their support is limited to the headbanger element dispersed across the entirety of Scotland, but thankfully not concentrated enough in any single place to give them a solitary directly elected member.
The longer that's ignored, the more likely it is that we'll see a steady rise in those numbers
It's not being "ignored". They got the 17 Regional members the dispersal of their vote share merits. There is no obligation upon anyone to entertain those members beyond that.