LTSB (or LTSC) aren't designed for general purpose web office machines. This is one of the reasons it's difficult to get LTSC, it's only available via enterprise and it's designed for a very specific non changing long term environment. It will never have the most updated drivers, or the integration of the latest/greatest web browser or microsoft store.

LTSB is amazing fit for things like kiosks, POS, appliance that are designed for a single purpose only. Uptime & Stability is the purpose, not enduser focus. You should never use it outside of a large enterprise where you can support it.