obesity- and smoking-related illnesses take up a huge share of available health care resources. to say they are "clogging up" hospital beds is a little insensitive though.
Patients with heavy Covid cases ( like the ones that needed ventilators to breathe) took all the place in many hospitals and healthcare systems, and then some ( temporary and military hospitals were deployed to help with that). It's not even remotely comparable.
i recall looking over the occupancy numbers for the temporary hospitals and hospital ships deployed as a response to the 2020 outbreaks in the UK and US, and they were mostly empty. sadly i cannot find that info now so i guess i'll just have to shrug about it. and i assume "took all the place in many hospitals and healthcare systems" is an exaggeration. i would still have to assert the health care costs to society of obesity and smoking are comparable to the costs of acute covid surges though.