I think you could take the time a rocket would be in the way and compare it to the time it would take any given satellite link pair to make an orbit to form an estimate of the chance of a single interference. Then multiply by rockets and satellite pairs to form an overall estimate.
Which is actually a lot more then I estimated when I started this math, kinda puts into perspective more then 1 of the scales at play here.
Tl;dr Rockets are fast, data is apparently faster.
[0] Apparently on its longest distance link Starlink intersected 30km altitude
[1] Ref: my ass