When it came out there's a malware campaign that tries to extract MFA codes from Google Authenticator by taking screenshots, there was a lot of criticism towards Google for not setting the flag that activated that API and made screenshots impossible, and it's a good solution, there's no viable scenario in which you'd want to screenshot your MFA TOTP codes. I admit that i'm sometimes annoyed with it's use in banking apps, but IMHO it's a needed feature for security.