First part is true, but MOM has right to challenge and deny application. Second part is true as well.
Can, sure can.. MYR500k = Approx. SGD160k. I don't have exact figure of IB analyst, but I can roughly guess their total compensation (including bonus) is more than SGD80k p.a. (Any IB banker here can correct me if I am wrong?

)
Assuming flat 80k with no increment for next 4 years, that makes an average of 6.6k monthly.
Minus expenses for rental, living cost, statutory deductions and entertainment = 2.6k monthly (I know this may be huge amount for some - But let's assume expense for a Single bach and Ivy league grad).
If he/she has CPF/Pension plan, take home will be lesser, however actual earning is more than 80k p.a. now.
So, his/her saving p.a. is about 48k, and 4 years about 192k. Minus 160k of tuition fees.
That will leave him/her approx. 30k, for his/her vacation, saving, family, partners, etc.
p.a. = per annum.
Above is my personal assumption, definitely doable. Flat 4 years total compensation is unlikely, so gross income is higher over the years.
total gross compensation is closer to 150-170k for first years, so yeah def not impossible to pay back 500k ringgit in 2-3 years.
but i should add that ivy league undergrad would cost at least 1M ringgit these days