Maybe they move on to the WTC instead?
In my country, Italy, once upon a time (until a year ago ) there were three big exams to take if you wanted to get the graduation in piano, for which you had to play some works by Bach among other composition you had to study1. the basic level (our 5 grade) you had to prepare 2 whole english suites (A minor and G minor) and 3 sinfonias (3-part iventions)2. the middle level( grade 8)24 preludes&fuges 12 from the first book and 12 from the 2 one of the WTC3. the graduation exam (10 grade) One composition by Bach such Partitas, Concerto Italiano, Bach-Busoni transcriptions.Italian students know very well what playing Bach's music means and it's considered unavoidable for a pianist if you want to gain the best advantage for your technique skills and your music education
I like the English Suites (which, I'm sure will surprise no-one). They're not really that much more difficult than the French Suites, so not sure why more people don't play them. Maybe they move on to the WTC instead?