Yes, there is possibility that he might lose it for a few weeks and then gain it back ESPECIALLY if Wi points count this year. But overall agree with your assessment.
Sampras had the record for 9 years outright solo( he got the record in 2000Wimbledon) and 10 years if you count one year as joint holder.
But in open era Sampras got out right record in 99 Wimbledon so 10 years and 11 years as joint record holder .