Already the second Sprint training (3 times 100 meters at a pace of 3 minutes per kilometer after 3 minutes of rest, only two laps) gives inadequately high rest time (50+ and 70+ hours). Training readiness drops very low. Subsequent training is accordingly incorrect and does not correspond to the actual state of fitness.
Did you have other sprint trainings in the last ~4 weeks, or was this a unique one? That might explain why Garmin gave it higher weight, despite it not being that impactful overall. Though I don't claim…
What kind of Anaerobic Training Effect did you get for this workout? It's a number between 1 and 5 on the "Stats" section of your workout. 50-70 hours suggest you got something like a 4.
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All right, so it makes some sense to tell you to take it easy after sprint training. If you do more, it will be gradually less worried about them. But sprints are hard in general. I get muscle soreness…
What kind of Anaerobic Training Effect did you get for this workout? It's a number between 1 and 5 on the "Stats" section of your workout. 50-70 hours suggest you got something like a 4.
The watch usually freaks out about anaerobic training in general, more than about any other training type, but it also makes some sense as it comes with the most muscle damage that needs to be followed by easier training days. Recovery time does not mean "don't do any training", it means don't do other hard training like threshold runs and similar. I think in general having a few days of easier training after sprints is reasonable.
Also I noticed with higher overall training load the algorithm freaks out less about anaerobic efforts too, but it still weighs them quite heavily.
If you want to override it, choose another Daily Suggested Workout from the following 6 days instead of using the one for today, though I usually regret when I do that. 
You can find them in Run activity -> Training -> Workout Library -> Daily Suggestions.
