Guarantee you that there's a bunch of environmentalist activists who are pissed off at this. Because their real agenda is they want to harass meat eaters because they're "right wing".

They'll probably also say that 13% isn't very meaningful... and they'd be right. Both because 13% is just 13%. And because methane as a short half life. On longer timescales, it makes no impact to climate at all as it decays back into water vapor and CO2.