Kangaroos hop because they can store a lot of energy in there Achilles tendon and use that to propel them forward without using much energy. It’s good for covering long distances over flat terrain while using as little energy as possible , which is good for the Australian outback as they hop between small patches of vegitation separated by miles of desert. It’s not that good for ambushing or quickly chasing prey in a rainforest like the t rex is probably doing.
There’s also the issue of scale, a t rex’s Achilles tendon would have to be stronger then steel cable and as stretchy as rubber to store and re use that much kinetic force from its weight.
Seems a bit of an exaggeration to say everyone. The population at the time of the revolution was around 2.5 million. Of that maybe 500,000 were the land owning white male “patriots” that would support the revolution and of those maybe half read or were influenced by Thomas Payne so around 250,000. We tend to attach a lot of significance after the fact to the American revolution, and Adam’s, Payne etc. Since it spawned one of the greatest empires the world has ever known but at the time it was a relatively minor tax revolt.
this isn’t even a matter of the world in general was smaller back then, France at that time had a population of 28 million. Payne would go on to have less success in convincing everyone there on his ideas because the scale is just so much more massive. Same with modern day.