On the old site I seem to remember I could only have a maximum of 40.
Now I probably have 75/80.
But a couple are likely gone from Ireland for good but I just leave them there on the offchance.
A huge number are out of the country on holidays, and others are in various parts of the country, so in effect, as little as five may be active and close to me.
So yes you can follow 90 escorts.
It might be a different story in Dublin, of course, where far more would be active and concentrated in a more localised area - then it might be a case of overkill.