I lose any respect for those who buy the new iphone and similar priced products
Why do you lose respect for people who buy new iphones?
They can't afford it and spend 10,000 yuan on a phone and not even consider that money.
Even if they cannot afford it you should not judge others on the purchases they make. Instead of judging others you should focus on improving yourself.
I won't judge them anymore, but I can't afford one because I'm working a part-time job, I hope they understand that.
I am glad that you won't judge them for it and it would be good for them not to judge you for not being able to purchase one. It would be as bad for them to judge for it as you judged them.