Looking at the top 20 hot posts on /r/coffee right now the only one that has to do with expensive equipment is 1 post where someone is asking if the Mazzer Super Jolly that they got from a business is overkill to use at home [1] (it is but if you got it for cheap then might as well use it) and another post about a calibrating a refractometer [2]. The rest are questions about tasting coffee and troubleshooting cheap pieces of equipment (pour over brewers that are all <$40, moka pots, french presses, etc.).

[1] https://www.reddit.com/r/Coffee/comments/x7lo4x/mazzer_super... [2] https://www.reddit.com/r/Coffee/comments/x75a35/refractomete...