I know Bruichladdich has said they do this for the Laddie Classic (a bottling I really love). Source: just trust me bro. I don’t recall when or where I heard that. Possibly they do it with other bottlings, and surely other distilleries are doing the same thing. Bruichladdich didn’t invent the process. But it’s not a well studied, documented, or promoted element of whisky ageing, because, I think, it’s not as sexy as infusion and evaporation. Among other reasons. If you’re curious, I could spin a yarn.
Any distillery that chooses to do this, certainly does it for a reason. Disgorging and re-casking a batch is a massive pain in the ass, and holds up warehouse space & production timelines - two things a bean counter with no sensitivities to flavour would be happy to cut out.
It’s not obscure, but, for me, Wikipedia is the ultimate example of the old internet that still persists today.
Free to use, no account required, ad free, non-corporate, multilingual, heavily biased toward text, simple and utilitarian design. Hyperlinks concatenate relevant pieces of information, which serve as the means to navigate the site. The code is very simple (seriously, view the page source of a wikipiedia article). It’s based on the human desire to learn and share knowledge with others, and has remained resilient to corruption by commercial interests that pervert that desire for monetary gain. It’s a beautiful thing.