Yup.
I agree - when I was posting I was thinking that, too - but still believe the idea that downslope exits with a sudden mass outpouring being implicitly unsafe had to have a bearing on them eventually thinking, "We ought to have barriers, just in case.".
The Love Street slope was never as steep as the Ibrox end - also, how many times do St Mirren score a vital last minute goal?
Also, St Mirren fans stay to the bitter end.