https://www.youtube.com/embed/dTxapn-WgxsWow- what a spicy topic! I personally love how much skateboarding harbors iconoclastic view points. skateboarding is a counter culture and part of that role is to be skeptical of the mainstream. the current political mainstream is unapologetically left leaning; so i don't begrudge your skepticism Oldguy78
BUT- questioning skateboarding's environmental impact is
totally validwhether you "believe" in climate change or not, its obvious that a nearly 5bn dollar industry (citing a previous post) has environmental impacts- pollution - waste - these are realities of any industrial process, and a skateboarder can examine them, and even criticize them, without being a hypocrite.
The problem is that climate change/global warming has been made out to be an ideological issue when it's not.
The entire reason why there is a "climate debate" is because big businesses have propped up an elaborate propaganda campaign to create doubt! their motive for this is to avoid regulation of their industries and protect the money they make. (
)
There's a really good documentary called "Merchants of Doubt" which exposes how big businesses created the "climate deniers" movement by
paying people to pose as credible professionals and propagate
misinformation!
watch it here:
the craziest thing is that even with all the scientific evidence, which debunks climate deniers misinformation
(I have a really good website for this too that I will add once I remember the domain name), the doubt is still enough to create skepticism culturally- but mostly
along ideological lines.
why is that?
well, a recent study found that people are more likely to discriminate against others based on
ideology more than any other socio/economic factor. (race, creed, gender, sexual orientation, class, etc)
this goes for both liberals and conservatives! 
Basically people choose what information is credible or not credible based on the views of their "affinity" group (i.e. friendlys on the ideological spectrum). the full article is here:
http://journal.sjdm.org/13/13313/jdm13313.pdfbut theres a less technical/more readable one I can share with you once i find it.
and dude, whether this UK women got arrested for "misgendering" someone on twitter is real or not.. I haven't looked into enough to be satisfied of a truthful answer yet... the source used in the youtube video you posted (uk daily mail) is a tabloid and is not very credible. to me it sounds sensationalistic enough to be skeptical... not that i don't believe that it couldn't happen based on the current state of free speech in our society. but yea- seems to be beside the point about skateboardings environmental impact anyway.