Point number 2 is utterly untrue as any experienced cannabis enthusiast could tell you. Even if people don't know the strain or what the effects are it's pretty reliable that it will either energize them or send them to sleep.

It's not untrue, there is no definition genetically of what a pure sativa/indica strain even is, see my other comment here.

What they were saying is anyone with experience in cannabis can tell you after a few minute of smoking if it's sativa or indica. Doesn't matter if there is no genetic definition, there are obvious differences.

There aren't, and those subjective reports can't tell us anything related to how 'sativa' or 'indica' some strain is. The only thing that affects high is CBD-THC ratios (and possibly other alkaloids) & those are independent of strain.