Last year though was not just about defensive problems as not having an off-season, extra practices, etc. really hurt a first year coaching staff and the players as well.
Fumbles, missed assignments, being out of position, wrong personnel on the field, etc. could be in some way attributed to many covid-related changes, limits and cancellations last year, but there will be no built-in excuses this year.
I am not giving them a free pass for last year by any means, but we should have a much better idea of the quality and capability of the coaching staff after this season.