If you're determined to use an 11 year old MacBook with current software, you could use OpenCore Legacy patcher to make it run a current Mac OS rather than Linux.

iFixit does a teardown of each new model.

Overall, oven ranges are pretty simple machines. It is a good idea to check junctions for leaks, and to have the valves rebuilt - but all that really means is just replacing the grease that seals them.

Asbestos is unusual to find in vintage ovens, they usually used rock wool insulation.

All resistive heating elements are 100% efficient, no matter what era they're from. So aside from differences in the oven insulation, this uses exactly the same amount of power as a similar modern stove.

The "in place" bathtub repair "enamel" isn't actually enamel but is just a chemical coating, I doubt it's heat safe. Real enamel is glass powder melted onto the metal at 1,500 ºF, similar to ceramic glaze.

However, there are places that -actually- restore enamel items by removing all of the old enamel and firing new enamel on in an industrial kiln.

There isn't any way to repair an existing enamel finish though.