To improve/cure the current state psychotic physics of expansion, observed red shift must be accounted for. 1) radial from observer; 2) accelerated red shift from farther distance. Extra (assumed unaccounted amt) Tired Light fails on #2. EU/PC fails on #2 as well. LCDM ppl are smart but they need expansion and derivatives to cloth naked/lacked understanding of the cosmo.
Throw GR/SRT space time and or quantum mumbo jumbo into expansion psychosis could cause brain dead!
Meta/symbolic is fine however reified, turned into psychotic.
Actual mechanism must physically be coherent and consistence. Of course, easy enough for a fifth grader to understand.