When making my fork at the UBI framebuilding school, they were out of super long threaded steerers (my frame had a very long head tube). I was given an unthreaded 1" steerer and a Park HS threading tool. It took a lot of effort, I had to stop and rest my arms and shoulders a few times, but it was doable.
I've also ruined a fork once that needed threads extended. The top wasn't square, and I started the threads off axis, ended up ruining it, so follow John's advice, above if you're doing this.
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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.