No idea about 60,000, but it's not impossible to make whole orbits unusable by launching piles of small junk.
replyIts will ruin it for everyone, but Russia or China is certainly able to do that.
The Starlink orbits are so low that stuff deorbits quite quickly withou active propulsion. So while this might work for a while, you woul need to replenish that junk for it to continue working, in all the many orbifs you would want to deny.
replyAn EMP from a high altitude nuclear detonation would do the trick.
replyyou do not need an orbital capable launcher to carry an anti-satellite weapons. Modified SAMs are sufficient.
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