Quote:
A valid reason should not be understood as simply referring to cases of real need or necessity. Rather, even convenience cab be a valid reason to follow another opinion. For example, you may choose to pray Asr according to the earlier time because it is easier for you from a scheduling perspective, something important for this working and studying. Similarly, you may choose to eat seafood because your family does so.
This is really a very poor answer and does nothing but open the floodgates to fitnah in a far worse way than the salafis ever could by being ghair muqallid (at least the salafis stick to the opinion which they think will bring them closer to Allah tala, not picking and choosing one of convenience/whims).
There is a very thin line between convenience and whims, indeed if any. This answer, generally goes against the principles stated in the quotes of your earlier post.
So if I decided to pray asr at the earlier time becasue it'll make my life a tiny bit easier, does my wudhu also need to be in line with shafi madhab?
And just as an example of the fitnah this answer can open up:
1: It's convenient for me not to redo my wudhu if I touch a female as there's too many females in my house, so I'll adopt the hanafi madhab in this issue.
2: It's convenienet for me to pray Asr earlier so I'll adopt the shafi Madhab in this issue.
3: It's convenient for me not to wear leather socks as my feet get sweaty, so I'll just do masha over cotton socks.
4: It's convenient for me to allow my children to draw animate pictures becasue I want them to become decent artists, So i'll adopt the maliki madhab in this issue.
5. It's extremely conveneient for me not to go to jummah when I'm at work, so I'll just adopt a hanafi opinion of this being a land of war and jummah not neccassary.
Islam just became a whole lot easier!
I can probably think up of a conveneince or whimsical need for just about any opinion I want to adopt.

