It shouldn't worry you. These recommendations are based on experience giving instrument training, and the conclusion that the training goes better if you have more XC PIC time.
There is no XC PIC requirement to enroll in a Part 141 IR program, just a PP certificate. However, a 141 IR program must be a minimum of 35 hours of instrument training. Some of that can be in a sim, but it all must be with an instructor -- no practice time with a non-instructor safety pilot.
You certainly can do that, but my experience suggests that other than in a full-time professional training program, you'll do better with some seasoning first -- go fly different places, work with ATC, etc. Once you're comfortable doing that, then start your IR training.