Well said but if anything understating the problem.
For Poch's first game in charge, players included Lloris, Vorm, Walker, Rose, Vertonghen, Davies, Dembele, Mason and Bentaleb (Poch first choice CMs in 1st season). Eriksen, Lamela, Kane.
And these are the players who were core to Poch's teams.
Transfers in to Spurs after that point in time :
15/16
Son £27m - (Huge success)
Alderweirels £14m (Very good for several years linking up with Vertonghen)
N'Jie £12m
Wimmer £5m
Trippier £4m (Very good option for a couple of years)
But after that its not so good :
16/17:
Wanyama £11m (one season wonder)
Janssen £ 17m
Nkoudou £ 11m
Sissoko £ 30m (2 seasons awful, 2 seasons ok, 1 season awful)
17/18:
Gazzaniga £ 4m
Sanchez £ 38m (one decent season, but not lived up to expectation. Overall average ?)
Foyth £ 8m
Aurier £ 23m (always an accident waiting to happen, had to be paid off),
Llorente 12m (End of career type signing but under used)
Moura £ 25m (Only a surprise hattrick v Ajax seemed to be his legacy, but playing his best under Conte)
18/19:
Nobody - Poch too picky to have 2nd options after De Jong picked Barcelona and new Villa owners refused to sell Grealish
19/20:
Ndombele £60m ( Appears too lazy for PL)
Lo celso £ 42m (Seems a nothing player except for Argentina even when fit)
Sessegnon £ 30m (Too injury prone to assess other than decent loan season at Hoffenheim)
Clarke £ 10m
Bergwijn £ 27m (Hasn't worked out - my pragmatic alternative of Bowen from Hull in line for 20 goals/assists this season)
20/21:
Hojbjerg £15m (key midfielder last season, been run into ground)
Doherty £15m (Poor despite a PL pedigree)
Reguilon £ 27m (Really expecting more - hope he responds to Conte coaching)
Rodon £12m (don''t know why he has not played more - impossible to assess)
So since 2016/17 window ....... its between Hojbjerg and Moura as to who is our best signing.
A truely awful result from so many Transfer Windows and so much money spent