A marketplace being on blockchain lifts resources that a publisher would need to use to maintain their own in game marketplace. I think it could be cool for gamers for example Fortnite if I have a skin and sell that skin or trade it for others I wont have to spend as much money continuing purchasing new skins as I can keep trading or buying and selling and the publisher is earning a certain percent from these transactions so they wouldn't care that I'm not buying new content. Like you said it can definitely be exploited like MTX but I expect pushback if NFT are exploited by publishers. I just think the tech is really cool and would love to see it implemented in a non-exploitative way in video games.

I know the benefits, but in my opinion they are far outweighed by the potential for environmental damage. If publishers want their piece of the cake, they should do something to earn it instead of pushing the cost on the environment. Also, gamers have shown again and again that they're willing to get exploited, so I don't share your faith.

There are blockchain platforms that power NFTs that have very little environmental harm like Tezos and Solano. Also Ethereum 2.0 is rolling out in his year and that has a focus on being environmentally friendly. 

Ew hell no. Hopefully the future is crypto being banned everything and nfts, which are just a grift to get you into crypto, also die off completely

You know what's even more environmentally friendly? No NFTs!

There is no need for them, they serve no purpose that can't be done more efficiently and with less opportunities to scam people.

Even when applied at an extremely large scale? Anyway, I'll believe it when I see it. Maybe blockchain technology will be more sustainable in the future, but until we're there, I'm against it. If we ever get to a suistainable point, we can start talking about actual use cases more seriously (which I'm not optimistic about, mind you, because there isn't much NFTs can do that hasn't been possible for a long time already).

I mean everything we do has an environmental impact. Atleast there’s options out there that drastically lower that. For example the banking and gold industry harm the environment far more than crypto does but it’s ridiculous to get rid of physical currency in exchange for digital. 
The blockchain is a reliable way to manage NFT contracts and the tech can be used for a lot more than art. 

Nope:

According to independent researchers Max Krause and Thabet Tolaymat, it takes 17 megajoules (MJ) of computer power to generate $1 of bitcoin and only 5MJ of energy to produce $1 of gold. In fact, bitcoin mining is nearly 15X more carbon intensive than mining an equivalent amount of gold (in dollar terms).

Sustainable blockhain platforms are used in a large scale. For example Tezos last year carbon footprint was equal to that of the average footprint of 17 people and they had 33 million transaction last year.

https://tezos.com/carbon/

https://xtz.news/latest-tezos-news/tezos-in-2021-a-year-of-adoption-and-growth/#:~:text=A%202021%20summary&text=This%20year%20we%20had%2033,on%20mainnet%20were%20NFT%20related.

Solano last year had 20 billion transactions and energy usage equate to 1038 American households. BTW one solano transaction takes 65 times less energy than play 1 minute of a video game on the Playstation 5.

https://solana.com/news/solana-energy-usage-report-november-2021

Yeah I said the banking and gold industry. Include banking into that and physical currency is way more harmful than digital currency.