Actually, this is not just a meme. It's right in line with a factual report in mainstream media that the DNC is going to be working with SMS carriers to block the sharing of "misinformation" in private text messages (not non-factual information, but "mis"information that does not accord with their narrative). A direct quote from an article in Politico, referred to in this commentary:

"Biden allied groups, including the Democratic National Committee, are also planning to engage fact-checkers more aggressively and work with SMS carriers to dispel misinformation about vaccines that is sent over social media and text messages. The goal is to ensure that people who may have difficulty getting a vaccination because of issues like transportation see those barriers lessened or removed entirely.

“We are steadfastly committed to keeping politics out of the effort to get every American vaccinated so that we can save lives and help our economy further recover,” White House spokesperson Kevin Munoz said. “When we see deliberate efforts to spread misinformation, we view that as an impediment to the country's public health and will not shy away from calling that out.”