WOAH. Three-year CNA here with thousands of hours of clinical experience and I can tell you right now it will make me a better doctor (currently an M0). What you need to do is think about all the experiences you've had, the patients you've helped, the diagnoses you've learned about and medications you've listened to a nurse explain - take all of that and realize just how much you've learned. I'm sure your patient care will be sincere, comforting and REAL from the moment you walk into real patient rooms. You will understand the daily grind of the nurses you're writing orders for, you will know that ordering lasix and prep for a colonoscopy for the morning at the same time is a living h*ll hole for the patient and nursing staff who help with the trips to the commode every 10 minutes (if that) and you will make better decisions without having to learn from your mistakes - because you've already been there. Don't let anyone tell you your experience isn't valuable enough. I have had physicians ask me for my observations with a patient because they know I spend more time 1:1 with them than anyone else - I bathe them, feed them, walk them, toilet them - everything. And you know this. So don't let some random interviewer tell you you're not worth it or that your job doesn't count as clinical experience. No "clinical experience" is ever going to be exactly the job of a physician, but you are gaining valuable insight into the world of medicine - which extends FAR beyond the job of doctor and works best when done as a team initiative.
I will say there is a difference between hospital CNA work and longterm care. A huge difference. I have med/surg and ICU experience on stroke, cardiac/tele, thoracic surgery, transplant and urology units. I've seen codes, intubations, behavioral health episodes, overdoses, a man with projectile diarrhea stuck on a trash can (yes, this happened)... the hospital is a crazy place. But you have gained valuable hands-on exposure to patients, which is more than other medical students can say. So know you're doing the right thing and continue working with your heart - because that's the only way you will survive being a CNA!!! 🙂
EDIT: Sorry I wanted to add, since you asked, that no that was not my experience at all with adcoms this cycle. Every MD interviewer only had positive words for me and my experience. I also wrote my personal statement around my position, which I think helped them understand what my world is actually like as a CNA. Best of luck!