I do not think you can easily know which follower is bad, by just squeezing them together.
Because if the valves are open on 1 cylinder, then there is pressure there, so then the oil is squeezed out of these followers if the engine is switched off and stands for a while.


In the same way, you can now with a pair of pliers or in a vice you can compress those that are hard so the oil seeps out and then it becomes as soft as these you think are bad.

When I disassembled my engine, I pushed everyone together to get out of the old oil and then every follower became soft.
But if there is debris in the hole, it will not be filled with new oil, so try to check this.