It's entirely possible to believe the average temperature of the earth is increasing, and even to accept that maybe it's mostly caused by human activity, and at the same time, honestly say "it's overhyped and I'm not getting sucked in and manipulated". The earth has been hotter and colder before, mass extinctions have happened before and will again. meh
I've seen this kinda argument get thrown around a lot, and even used it myself 10-15 years ago. It is true events like this have happened in earth's past history. We've survived them.
The issue is mass extinctions and temperatures increases have never happened this fast outside of massive ecological disasters like meteor strikes or mega volcanoes erupting.
The recovery from these events has taken thousands to millions of years. Will humanity end? No. Will the world end? No.
It's getting harder and more expensive to grow food. That's the primary concern. Crops are dying. Oceans are acidifying, killing what's in them we eat.
The easiest example of this coffee. The corporations that grow and sell them are currently panicking and trying find an alternative strain because the arabica blend is dying in droves because it can't stand the heat waves and droughts that are becoming more and more regular. Easily searchable online.
Can also search the agricultural issues with drought and heat affecting California.
It's plausible to wave away the doomsday scenarios and fire tornadoes.
It's difficult to wave away the mass extinctions. We are part of the ecosystem and the food chain. If those collapse, our species will collapse with it. Millions, if not billions will be faced with at the very least unnaffordable food prices, and at worst famine and death. It would be a mass extinction of humans. It would be subjecting the human race to thousands to millions of years of food shortages. Hydroponics are not capable of feeding the current human population.
That's what concerns me, not that it's getting a little hotter every year.