It CAN work but it will raise the temps of everything else since it will be dumping the warmed air from the rad into the case as fresh air. Is it a good idea? Not unless your using a very cool running mobo chipset/cpu/ram and not overclocking either. The gpu's pcb components would probably be ok with the slighly warmer air though. Id look for a different solution, like custom modding case, new case, different setup for rad...maybe put it on the outside back.

I don’t know what case you are using, but I have typically had good results with intake fans on the bottom and radiator exhaust on the top and either front or back.  Front has actually worked pretty well since there’s usually no chance of it becoming obstructed.  Intake via through the radiators is of course bound to increase the internal temps.

I had the same concerns with my 3080, then I realized that even without the hybrid kit I still have a 350w GPU exhausting heat inside my case. I got my hybrid kit the other day and so far temps seem to max at around 59c under load on my gpu and my cpu temps which is under a noctua nh D-14 stayed virtually the same after the install. Maybe 1c or so higher. If you can exhaust go for it, but front intake won't kill you