How many Flying schools operating say 20 years ago are still operating today? Not too many I’d suggest, if they are they’re probably still Flying the same aircraft they were 20 years ago. The problem with most schools is they are poorly run from a business perspective. If they’re not charging someone to sit an exam that’ll likely occupy a supervisors time for the best part of an hour, they’re not running the outfit properly as a business. The end result of poorly run schools is a trail of financial disaster - instructors not being paid, superannuation not paid, aircraft owners out of pocket, engineers left with unpaid invoices and students with incomplete training having possibly paid money up front.
Pay for the exam and don’t complain.