You gotta think about it though. A normal offseason is 3.5-5.5 months depending on when the team's season ended.
If they start on Christmas and start training camp earlier in December, 8 teams (ATL/CHA/CHI/CLE/DET/GS/MIN/NY) would have had 8.5 months off. The 6 teams that were in the bubble but didn't make the playoffs (MEM/NO/PHO/SAC/SA/WAS) would have 3.5 off. The 8 teams that went out 1st round would've had 3. The 4 that lost in the 2nd round got 2.5.
And also let's account for the fact that all 22 teams in the bubble were also off for 3 months between the suspension of the season and the start of training camp to get ready for the restart.
The teams that get the short end of stick are really the Lakers & Heat, and to an extent the Celtics & Nuggets. But it is what it is