Signal used to do text messaging as well but they removed the feature. As they felt it was unclear when a message was fully encrypted ( signal message ) and when it wasnt ( text /RCS message ).
I don’t think there’s a privacy friendly chat app that also does RCS.
You get SMACKED or SLAMMED in newspaper articles. The damage to your ego is enough punishment really. Much worse than any fine or jail time.
Billionaires have it rough.
/s