Tech Waste. An Existential Threat? "Climate Change" is more popular and financially rewarding.

Scientific American: Tech Waste Is a Danger to Us All.

Hardware in general, and smartphones in particular, have taken over our lives so quickly that few of us have had the chance to think about what happens to them when we no longer use them. The answer is that they become a huge environmental and health problem in the Global South’s landfill sites.

We don’t hear much about this problem because it is out of sight, out of mind.

Electronic waste is currently 5 percent of all global waste, and it is set to increase exponentially as more of us own multiple smartphones, laptops and power banks—few of which are likely to be repaired or recycled at the end of their lives.
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There is an almost limitless consumer demand for hardware, and governments do not have bottomless pockets, especially when their green policies are focused on more high-profile issues like carbon emissions.
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Only the manufacturers can fix this, by creating a circular hardware economy.

No, this is not a problem that "only manufacturers can fix". Not any different than blaming manufacturers of plastic and the hysteria of the pearl-clutching-crowd crying for bans on plastic bags and bottles. People use and buy based on their wants, needs and what they feel is a good return for their money. Much of it is packed with plastic.

Do you want that plastic band around your ice cream container so you're assured no one the super market, opened it, licked it and returned it to the freezer? I'm betting no matter how much you hate and want to ban plastic, you like that plastic band.

Look around your house. How much plastic is there is in everything? I'm betting, at some point in their journey, fossil fuels were used in transporting those items to your home. Plastic is versatile and affordable, same for fossil fuel.

Consumers play a large part in tech waste. The question is, is the Tech-Obsessed-Must-Have-the-Latest-Device-Crowd willing to do their part? And a circular hardware economy has a limit, it's not an endless loop.

Tech Waste can wait. We have to solve the Existential Threat of Climate Change first.

I've referenced the stories below in the past and I'll use them again:

Amnesty.org: Child labour behind smart phone and electric car batteries.

GreenTech Media: With demand for cobalt and lithium surging, companies need to be aware of where they’re sourcing from.
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Scientific American Archived
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(Feb. 17, 2020 typo fix "is" to "in")