Would a new tag: [screen-time] be useful?
PROS:
The new "screen-time" tag may help in tagging and searching for questions about any screen time related issues that are applicable to more than one device type: TV, computer, tablet, smartphone, etc.
The "screen-time" tag can replace and make more generic many single-device, more narrow tags, for example, "smartphone", but only if in fact the Q&A thread is more generic and applicable to, for example, "smartphone" and "tablet".
A brief search shows that "screen time" is a common topic on this stack (337 results as of this writing): https://parenting.stackexchange.com/search?q=screen
The term "screen time" is becoming more popular with time. For example, see PubMed search,
Results by year
plot in the upper right corner (2008: 22 articles, 2018: 307 articles): https://www.ncbi.nlm.nih.gov/pubmed/?term=%22screen+time%22Yet, many threads either have one, narrow device tag (e.g., tagged with "computer", but actually applies to other screen types), or missing the device tag entirely:
tag "computer": Up to how many hours of screen time is OK for a teenager for educational purposes?
tag "cellphone": Should we introduce screen time to our 27 month old?
tag "media" (expected: "television"?): How to make my 18-month-old son eat without screen time?
tag for device/screen missing: 10 year old's screen time: Studies and/or Government recommendations?
CONS:
We have many tags already (but many tags have relatively fewer tags than the "screen" search results above).
One can search for "screen time", "screen", etc, without the "screen-time" tag (but tags do have many other uses, such as for watching, organizing, etc).
SEE ALSO:
Tags: Brand / product name or umbrella term?
Merge or close question on screen time?
[EDIT July 29, 2020]:
New questions that would benefit from this tag keep coming in, for example:
How do I schedule a timetable for a 4 year old?