If push comes to shove and you end up damaging the threads, not all is lost.
I prefer not threading into those dropout eyelets, sometimes I drill out the threads. Best to use a bolt and nylok nut for that application, they'll never loose, and if they seize a hacksaw or dremel will remove them.
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If someone tells you that you have enough bicycles and you don't need any more, stop talking to them. You don't need that kind of negativity in your life.