I think one of the challenge for mentors out there regardless of whether they work in tech or not is that it is really hard for aspiring designers fresh out of bootcamps or universities to create real software within products.
For example, if you ask them to add a new feature in Figma, they will almost inevitably over simplify the whole process (almost too optimistic) because they would not understand how the whole software system is interconnected with each other, how it fits with the current system and certainly not understand the technical constrains.
Looking forward to your thoughts on this.