I find that people who demand or complain about training tends to be a really good filter for people that are hard to work with or intellectually incurious.
Ya, honestly fuck training. People who demand training in order to fly an airliner or operate power tools or conduct surgery are just hard to work with and intellectually incurious. They should be able to figure it out based on YouTube videos and ChatGPT prompts.
Way back in the original dot-com boom some people where I worked were concerned about how we'd provide training for our web product. The CTO shut that down with "if users need training to use our website, we've already failed."
Stick to conventions, don't reinvent the wheel, and training needs should be minimal.
Very few people who know MS Office could not pick up LibreOffice and be fine with it.