More like dumb question. From the meaning itself, "full time on bitcoin", it means that you're spending your whole time doing a certain thing. And yes, all of that stuffs can fill your whole day specially if you're distracted by other things like social media. Actually the things that would take the majority of your time is doing signature campaign and doing research. You might think that doing research would be an easy thing but no, it actually takes a lot of time to do. You shouldn't waste your time looking for "profitable investments" and mining.