In addition to employing scab labour, the Green Party has provided confidence and support for Tories, it's moved to a pro-NATO position, in it's first majority council it has backed a standard centrist political line. One of their current co-leaders is a former chief exec and CEO. A former leader worked for the Tories, the party was willing to have an electoral pact with the LibDems.
It is another liberal party, and to be fair it has not pretended to be anything else.
I am not going to address anything they have done, or are doing, in local councils, because all parties can act very differently at council level, due to various local issues, compared to what they do/would do in Westminster, so I'll stick with the national party items, as this is a thread about the GE.
In March 2023, because of Russia's illegal war, they took a common sense decision and abandoned their opposition to NATO. However, it's not as straight forward as that, their policy is to support reform of NATO such as guaranteeing a "no first use" policy on nuclear weapons, that NATO commits to upholding human rights, and that the organisation only acts in defence of member states.
He wasn't in charge of big evil PLCs, he was CE of Centre for Alternative Technology, a small charity running an eco-centre in Wales dedicated to demonstrating and teaching sustainable development, and later CEO of the small MCS Charitable Foundation, involved driving innovation to accelerate the use of carbon free energy in the, etc.
I've no idea which former leader had worked for the Tories, at what age, nor in what position, but that would seem irrelevant to the GP's current leadership and policies.
Under the FPTP system, there is logic in smaller parties forming electoral pacts, to beat one of the major parties at national, and indeed local levels. (As a side note Labour carried on taking loads of Tory seats in the Worthing council elections last year, taking around 50% of the vote in each, but in one ward where the Greens were in 2nd position, they only had a paper candidate with bugger all campaigning, allowing the Greens to take it with over 50% of the vote).
Instead of binging up a few minor things, that are basically irrelevant, in order to suggest they are a liberal/centrist party, you really do need to look at their actual policies overall, or their manifesto for the next GE, when it is released.
A brief summary from their 2019 manifesto -
To overhaul the UK's current voting system and rebalance government power by lowering the voting age from 18 to 16 and redefining the jurisdiction of local governments; the "green quality of life guarantee", which addressed social issues such as housing, the NHS, education, countryside conservation, discrimination, crime, drug reform, animal rights, and the implementation of a universal basic income; and the "new deal for tax and spend", which outlined the party's economic policies such as simplifying income tax, increasing corporation tax to make big businesses pay their fair share, supporting small business, and ending wasteful spending