Reserve your judgement
The commercial viability of JHK is unknown. Their flying operations remain to be seen. The provenance of their check and training staff is excellent. The success of their ATLA application is yet to be resolved. The attractiveness of the CoS will be tested, in due course, by the labor market. Customer acceptance of their product is yet to be explored. Availability of slots at CLK is not yet ascertained.
Of all the questions one can pose about JHK - I think the only one that is unimpeachable at the present time is the calibre of their training and checking staff.
Therefore, I suggest that correspondents here reserve their judgement of their colleagues. By all means comment on, and question, the merits of JHK as a commercial operation. But don't pour scorn on high calibre colleagues.