Tails 4.8 will ship with an persisting option to disable the so called "Unsafe Browser".
The Unsafe Browser exists to access captive portals.
Unfortunately this is also an attack surface. To everyone who is using public internet access points is the "Unsafe Browser" an essential tool. Just getting rid of that function would be a decision against those needing Tails probably the most.
Tails will instead minimizing more of the attack surface.