modex
“In other words, an oisher can buy a seat in Olam Haboah (by giving tzedakah) whereas an oni cannot. “
You have a chiyyuv to give maaser. If you give maaser you did a mitzvah Im not sure what all this talk about buying seats in olam haba is all about. If you do a mitzvah (properly) you get schar if you do an aveirah you get an oinesh. You cant bribe Hashem by giving Tzedaka. If Hashem did not make you an ashir its because its not your tafkid to have that nesayon and your neshama doesn’t need that specific Tikkun. However every Yid has Taryag mitzvos that he is obligated to do.