The reason....
Is that (for example) gov websites tend to divert you to stupid domains which have to obvious connection to the domain you are on. It's a minefield. Also they tend to have silly domain formats like...
bigAssedGovDeptName.WtfIsThisShit.es which on any click leads you to
EffinRabbitHole.XxxyyyzzPQ7775.es/someplace which is still a correct gov domain but you've no idea if it is or not.