If not, I don't feel the need for faster speeds than what I get, but I would be very interested in getting more data per month at the same (or lower) monthly price. If a cellular provider could give me internet connectivity (LTE speeds) at a price of something like $1 per gigabyte I would drop my household's cable service in favor of that right away.
Cities and buildings provide tremendous benefits. These benefits, presumably, outweigh the costs of harming wildlife to construct them.
The OP is arguing that the benefits of 5G are objectively minor and therefore not worth the cost of causing mass harm to a broad swath of wildlife.
I agree with the OP's position -- I will gladly keep my ~50Mbit 4G speeds if it means we will prevent the collapse of various insect populations.
If there are species living around the globe that might not be able to continue their current role in the global ecosystem in a world where 5G is pervasive, then we should not allow the use of 5G in the vast majority of the world. The consequences, for humans, via trophic cascade or whatever, would be extremely uncertain. Are the benefits of 5G really compelling enough to brave them? Certainly they are not compelling enough to me.
A less sinister take might be that faster speeds allow each device to get off the air faster, enabling more devices to be used in the same area. But that’s mostly a technical solution and I highly doubt the advantages rise to the level that the Business side has started pushing it. Salespeople just see the commissions.
Not just marketing people. Everyone at companies making the equipment (Ericsson, Nokia, Huawei), the chipsets (Qualcomm), and rolling out the networks (e.g., AT&T, Verizon, T-Mobile, Sprint) wants a piece of the pie.
Having said that, the promise of 5G is that it brings such an enormous bandwidth from a frequency perspective that it literally could be a broadly distributed very high speed connection technology for fixed locations. Purportedly one of the reasons Google abandoned their fiber project was that ultra-high speed for huge numbers of users with 5G would make fixed infrastructure for the last mile redundant. We'll see.
Also, things load pretty slow right now.