Pretty much, especially with their latest mess with “Zionism is racism” entryism, a leader who can’t lead, and a split between those interested in green subjects and rump Corbynites
They don't seem to be terribly interested in the environment for a 'green' party.
UK is a First Past the Post system. It doesn't matter what their national polling is, if it's going to result with exactly 0 seats in the parliament.