They will never do that. NEVER. It has become a perennial joke at this point in Germany with climate activists who block streets only to afterwards rack up 20k miles of air travel in half a year. The explanation? "The problem is systemic, individual actions don't matter".
Nobody considers their contribution relevant, because in total theirs will be dwarfed by everyone else's. That's just human nature. If the most-involved activists don't, how can you expect random people to?