The thing is, most new groomers need a heavy dose of reality. I'm, I don't know, "lucky", I guess? To be plunk in the middle of about 6 diff grooming schools. All advertise you will be ready to open your own biz in 8-12 weeks! Wtf? Can you think of any other profession where that would acceptable? Would you go to a hairdresser who had only been trained for 12 weeks? A mechanic? A plumber? A contractor? Yet, we, who spend our days with live animals and sharp objects think its just peachy? I will never understand that! I have interviewed people who have been full on groomers for 2-3 years who couldn't even properly bathe a dog. Out of all the people ive interviewed out of school, not once have i felt remotely comfortable at starting them as a full fledged groomer. So yes, experience in not only trims but safety and sanitation is absolutely ideal. Thats not sour grapes girlfriend, that's wisdom.
I admire your search for expanding your knowledge base but you have to understand that you are simply green. And pointing that out is not mean or cruel. It's reality! Which is actually the best place to start. I always say the easiest thing about being smart is knowing what you're dumb at. Being honest about areas you need improvement allows you to work on them. I, for one, can't do math. Like, at all. I swear I can actually hear my calculator laughing at me sometimes. But I love English. So I write essays and speeches and classes, but you will never see me respond to a number related question on here lol. So instead of getting defensive, open your eyes and listen. If you stick around there is a LOT to learn.
Whenever I hear people say, "9 out of 10 forest fires are caused by humans", all I hear is, "Somewhere out there, there is a bear that knows how to use matches."