I would rather wait in queue for longer than have Autofill make people dodge/remake 5 times

It doesnt work like that.

See this : https://boards.na.leagueoflegends.com/en/c/gameplay-balance/TXMonMRV-why-i-will-never-main-support-while-im-in-low-elo-and-why-autofill-is-a-bullshit?comment=0000

Let's look at people who que as top/mid. Since there's no autofill, someone has to wait an extra 30 seconds to find a game when another support starts que. Now the second person in line behind them that qued as top/mid has to wait an additional 30 seconds until they find their support (total of 1 extra minute). Now imagine you're 50th in line for top/mid. You have to wait an additional 25 minutes now.

So without autofill, que times would grow enormously and match quality would also likely drop.

So although it sucks playing support for a game every once in a while, it's not less fun than waiting for que all day.