If such functionality were well-implemented, you'd be able to disable it for a limited amount of time if you're expecting a call, and then the setting would kick back on automatically.
Apple and Google could work together (or even 100% independently) to tackle this at the handset endpoint level, yet there is no serious investment. They both have the data to create extremely robust solutions that could kill such life nuisances once and for all. Why do they continue to sit on their laurels rather than treating this as the serious abuse it is?
I get more text-message and phonecall spam than ever. Whatever [meager] measures have already been attempted are completely insufficient and have failed.
Imagining a future where my children perceive this as normal doesn't seem right. What can we do about this?