Ironically, the plastic scraper is the modern improvement to the previous antiquated ski wax removal tool: the metal scraper. I guess they used obsidian stone tools before that.
If your goal is to reduce/eliminate wax scraping, there are indeed alternative methods. The methods share a common aspect of using much less wax than traditional hot waxing - so scraping is optional. I believe most/all the methods are described in this sub-forum.
Plain "Crayoning" and "Hot Touch Crayoning" are probably the most commonly used. I've used both. Typically, I apply a very modest amount of wax, iron it in and then follow up with buffing the bases with a felt "pad" (8" x 12" strip of felt material wrapped around a wood 10" 1x2).
Another option is SkiMD Pro-Glide:
https://www.tognar.com/skimd-pro-glide-waxing-system/ . After crayoning wax, you use the high friction Pro-Glide tool to rub the wax in - no wax iron or scraping required. It works, BUT: using the tool is at least as much work as scraping - if not more.
Most of the season, I guess I kind of alternate between traditional hot waxing (with scraping) and crayoning (no scraping). Just depends how
lazy, uh,
busy I am. By spring, I'm always crayoning because the abrasive freeze/thaw conditions require daily waxing.