It still has huge potential. There are lots of niches out there. the important point is to create new aspects for niche and instagram account marching.
Useless waste of time.
When the gold craze happened they where people looking for gold and others selling shovels. The guys that sold shovels end up being rich.
The takeaway, when a trend happens dont dive your head into it, rather sell something that users will buy. E.g sell pre-made shopify stores