I typically keep a Windows VM running for the main purpose of using my brokers very powerful trading desktop application. While it is very useful and can do all sorts of calculations & graphing, it is kind of slow and the UI is a little cumbersome. The number of clicks to add a stock to a watchlist is very high, etc. In comparison, it takes 1 button to add a stock to mop [1] and I can keep it in a 'dropdown' terminal window controlled by a keyboard shortcut.

Unless you are a HF trader, you probably only need the stock price within a few minutes unless you are about to place a trade. (And typically all these terminal stock tickers are doing is scraping these sites anyway so the data is about the same.) Therefore, during the day I can watch stocks in the comfort of my terminal using mop [1] (or this if this has more features and is as easy to use), and if anything strikes my eye I can then go to my stock trading terminal and watch things more precisely.

I also do have a custom search engine that can open any stock ticker to finviz.com but I'd rather not have to have yet another account on some random website that either has distracting ads and/or pushes me to pay for more features.

There is a very large UX vs features trade off when it comes to anything stock related so it makes sense to use multiple tools.