If inflation makes it hard for someone to plan long term then why not plan early or plan before inflation occurs? In that way they can combat the effects of it and they can survive until the inflation rate gets lowered or totally subsided. Inflation is a big problem but only for those live's who have no direction.
You tell your boss you want a bigger raise than inflation and get 10% raise for this year, not really possible since bosses would want to pay even less, but assuming you are a vital employee (which you could be with 10k per month) you manage to get it. Now you are making 11k per year.
Assuming you got mortgage payment of 5k per month, you used to have 5k left after you paid it, now you have 6k left to pay it. Next year, same thing happens, now 10% would mean 1.1k more, so you make 12.1k dollars instead, and you still pay 5k, left with 7.1k instead. Year after that same thing and you get 13.31k per month, and still pay 5k. You can calculate it for 10 years.
By the end, you the debt would be nothing to you and you would be making a lot more and you would pay your mortgage very easily. Now imagine living in a nation with 20%+ inflation, your debt would be nothing in a few years.