I’m not surprised but I’ll shorten some of the longer words.
If every association around the Scottish league in UEFA’s top ten, twenty, or thirty (those leagues that get meaningful entry to European competitions) implement VAR, then across Europe VAR is a de facto standard in men’s top flight football.
If the major leagues in CONCACAF, Conmebol, OFC and AFCON have also implemented VAR, then it’s a standard for top flight men’s football worldwide. They all have. From Peru to Australia. The US to Morocco.
You could argue that “professionalism” is too broad a statement, and that there are leagues with 100% full time teams, or a pyramid structure that don’t have VAR. It’s a vanishingly small number though. Given the current position and strength of the domestic game, and even accepting a position between 8th-14th in the rankings if you assume recent over-performance, Scotland not having VAR or plans to implement it currently makes the league an outlier amongst its peers. There is an expected standard for professional top flight football leagues that we will not be meeting.