How is the lack of "memory waste" caused by dynamic linking, if I may ask? I thought multiple copies of the same binary already shared text whether dynamically

How is the lack of "memory waste" caused by dynamic linking, if I may ask? I thought multiple copies of the same binary already shared text whether dynamically or statically linked? Also, agreed: surf is lovely, except for the lack of adblock/selective noscript. And the cookie jar was pretty rudimentary last I checked.