How many games do you think the C's should have won given R. Will has missed 44 games, Smart 18, Horford 16, Brogdon and Brown 12 through 72 games? The C's have had the starting lineup of Smart, Brown, Tatum, Horford and R. Williams for exactly 5 games in which the C's are 4-1, last year the C's had that starting lineup for 34 games and were 27-7.
There is a chance the C's will be at full strength for the playoffs. If the C's are healthy they will have every opportunity at a title once again.
Selecting arbitrary breaking points in the season that best fit ones own narrative is a pointless exercise.