As far as I know (which isnt much) Global warming isn't really about heat released in systems. It's about its inability to leave the earth due to greenhouse effects.

While it is a concern if we produce a lot of extra heat, I think the main issue is being able to expect the heat to leave into space. Which is why most of climate change science focuses on greenhouse gases and not heat produced by machines.

No, not at all. The problem of AGW is not due to the calories we are releasing burning fossil fuels. It is because the waste byproduct of CO2 causing a slightly larger percentage of the sun's heat to be retained until the new, higher equilibrium temperature is reached where the trapped heat matches the heat the earth radiates.

The thermal forcing from emissions are on the order of 20x the direct thermal forcing.

Any energy releasing process (nuclear, fossil fuel with ccs, geothermal) is bounded somewhere around 10-20x current energy use by running into direct thermal forcing.

PV produces less waste heat depending on where it is installed so has a slightly higher limit, but both solar and wind have pretty severe land use limits you run into at 20-100x current global energy.

Basically, everyone can have enough energy to flourish, but it's time to reign in growth and maybe dial it back a bit from US levels of consumption.

If so I would think any power generation that uses steam would have the same issue? Coal, gas or nuclear.