Why misaligned address access incur 2 or more accesses?

Question

The normal answers to why data alignment is to access more efficiently and to simplify the design of CPU.

A relevant question and its answers is here. And another s

Answer 1

In my opinion that's a very simplistic assumption. The circuitry could involve many layers of pipeling and caching optimisation to ensure that certain bits of memory are read. Also the memory reads are delegated to the memory subsystems that may be built from components that have orders of difference in performance and design complexity to read in the way that you think.

However I do add the caveat that I'm not a cpu or memory designer so I could be talking a crock.