For those who are planning to deposit bigger amount, risking $35 to complete the 5x wagering requirement for the 1st deposit should not be a big deal IMO.
But for those who are planning to deposit like less than $100, they may see it as a big deal to think about it twice.
If the user is not a first time ever gambler, deposit $100 for many rounds or deposit more than $100 like $500 or $1,000 is very possible. Only a first-time-ever gambler will not want to deposit big money, bet big or don't plan to bet too more rounds. Most users will not bet once and leave so they bet multiple rounds, and money they spend for betting will increase a lot. These examples mean the $35 value is not too big with gamblers.
If they are really a gambler then $35 is nothing.
$35 is not small money in many countries, poor ones but with gamblers, I agree $35 is not too much.
Its so simple, if they don't like what implemented base on what's written on their TOS then its best that they should find different casino to gamble which meet the criteria what they like. Rather than complaining on something which is not actually a big deal after all.
Skipping ToS and worse skipping FAQ is very common practice of users and they're responsible for carelessly skipping important information. So if later they find something uncomfortable, nothing can be changed, thy must move on and accept the platform rules. If they no longer want to use the platform, just leave. If they don't want to repeat that mistake, be more careful and read ToS, FAQ next times on registration on other platforms.