I agree with this, the second most asked question I get from people who are trying to setup a wallet is something along the lines of "Can't I just download bitcoin on my phone?" which is a tricky question because the answer is yes, but the smart answer and choice is no.
My answer to this question is usually, yeah it's possible, but isn't recommended especially if the device you intend on using for it, is your daily driver. I for one can't recommend anyone to use a device whether that's a phone or a computer that they use for anything else which requires connecting to the internet. The exception is Qubes due to the way it's designed, although physical isolation is safer since there could be undiscovered issues in Qubes. Physical isolation you can always be somewhat sure that your safe from most common attacks or mistakes.
This happens a lot in some places where I reside, you can't blame the users of cracked apps, they are free and open to use by anyone. Me my self and some of my friends are using it, the OS of my PC is a cracked version too. Only I update it most of the time and all security aspects are on.
For me, when it comes to security there shouldn't be any compromise, unless its a rational one i.e not setting your password to 100 characters long because you'll never be able to remember it. Using a cracked operating system when there are arguably more secure operating systems out there that are free, seems like negligence to me. Obviously, everyone has different threat models, but personally being responsible for your own money, you need to take every rational precaution that you can.