Of course I don't like it, because it is unreasonable! How would you like to have a roster that you could plan nothing by? Most of the people who think this type of thing is acceptable are not pilots.
If you've already done a days flying it is reasonable to be able to switch off and go home. If you need someone to do another flight then call out the STANDBY crew. What STANDBY crew you ask? The one you have when you crew the airline in a reasonable and sensible way.
You guys who haven't experienced life under these regimes haven't a clue what it's like and I object to being told that 'it's legal' by someone who hasn't been there !