There is however a way of reverting this (for now?):
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Load about:config in the Firefox address bar.
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Click Accept the Risk and Continue, if the prompt appears.
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Search for extensions.quarantinedDomains.enabled.
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Set it to FALSE.
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restart Firefox.
Courtesy of pebcak at forums.endeavouros.com
Add to this not being worried about their phone more than the people they are talking to/ or spending time with