This is why Half-Life: Alyx has a customisable spectator mode, specifically designed so that you can control how the game translates VR visuals to a flat, 2D screen.
This is true for Half-Life: Alyx, as well as other VR games, of course, but Valve has a few solutions to this problem.
Half-Life: Alyx is one of 2020’s most anticipated games, but its nature as a VR exclusive makes it more challenging to stream compared to most games.
You can bring up the console and type “hlvr_spectator_hud_size 100” to change the size of the spectator HUD.