Yes, one does. I have in my study an old analog TV set. When I turn it on and place it on an empty channel all I can see is static left over from the Big Bang.
Reference: TV Static Comes From a Surprising Source... The Big Bang | High-Def Digest (highdefdigest.com)
Any substitute for BB Theory must account for a universe filled with 3°K photons at a redshift of z ~ 3000.
billslugg, very clever here
I note from the source you provided about TV static: "So, basically, light has been traveling for billions of years across countless solar systems and vast oceans of stars to screw up your TV reception right before the game winning touchdown. Thankfully, modern digital displays, antennas, and cable receivers don't really have to deal with static anymore, but it might be worth busting out that old tube TV again just to catch a small peek back into the creation of the universe. "
The BB model explanation for the CMBR today does need a good answer if another cosmology model is to replace the BB cosmology. However, there are obvious caveats that are not provided to the public too concerning the BB model explanation for the CMBR.
1. Space expands more than 100x c velocity before the CMBR becomes visible light in the universe (thus a universe about 40-41 million light year radius when the universe starts out the size or smaller than an electron). The postulated redshift for the CMBR today is not z ~ 3,000 (perhaps original CMB temperature 3000 K when it became light) but z ~ 1100 today in the BB model. Such a redshift has no spectroscopic measurement verifying this extrapolation like the Lyman break method followed up by spectroscopic examination (something done for JWST galaxy redshift reports). 4D space comoving radial distance requires the CMB is now some 46 billion light years radius from Earth, another caveat (seen using the cosmology calculators). At that distance, 4D space is expanding faster than 3x c velocity using H0 = 69 km/s/Mpc or 67 km/s/Mpc.
The BB cosmology presents a good model dependent interpretation for the CMBR and its origin, however, there are areas in the paradigm that are untested, like some of the caveats I mention.