Why? The companies can't see the data - it's encrypted. No different to you logging into internet banking and putting in your details via ssl.
big difference, some random company vs Your Bank.
Theirs no way you would know if they updated their software to read your encrypted data. Or worse A hacking group took over the software & released updated version which sent a copy of your data to the hackers
You have no way of knowing that before its encrypted its not sent somewhere or stored else where to be sent later on.
your trusting joe blogs. Then comparing Joe blogs Software practices to the likes of SSL ecnrypted Bank.
can the bank be unsafe, yes but lot less likely than random Programmer
and before you ask every site i visit i use a unique password with 2FA. i also do not use Mobile version of any apps.
all my passwords are changed every 2-4 Months and all the passwords are stored in my head. oh and where available their over 30 characters long