Klipsch!. The worst speaker company, EVER?

Somehow OT, back there in the thread white elephant / red herring, there was a comment "easier to drive" listing sensitivity numbers. Can someone correct me because for me easier to drive is impedance presented to the amplifier, putting out more dB / SPL per watt at 1 meter to me is no measure at all of easier to drive.
A high sensitivity speaker with nominal 4 ohm won't be easier to drive than a lower one with 16 ohms.
I'm a noob in audio matters and just trying to learn.

Further to my comment, the speaker nominal impedance across the entire full range of the drivers presented to the amplifier (I believe nominal means the average impedance across the entire range already but I'm not sure).I get the impression the sensitivity would be more of a marketing term of how loud a speaker will sound compared to another but this is somehow misleading IMO