Originally Posted by Daniel Dare:
“Apart from the points of Autons, 'Revenge' Cyber head etc. mentioned above, the line between the new & classic really began to blur as soon as Gallifrey got a mention... now that line between the two is virtually non-existent, .... especially even more so to the current 6 year olds of today where the only Doctor they're aware of is Capaldi's, the rest like Tom Baker, Pertwee, Matt, Troughton & Tennant are, to them, in the same pot under 'old Doctors' and will in time see no line at all.”
I agree with your points. As time has gone on the C21 version has become a continuation. People on this very forum have already referred to Eccleston, Tennant and Smith as "old Doctors".

The line with classic DW has blurred.
I think RTD wanted to establish his new DW in its own terms first, with its own identity before going on to solidify its continuity with the past.
Back in 2005 the audience wasn't sure whether the new
Doctor Who was a reboot or a strict continuation. Even the use of the Autons in the first episode didn't prove conclusively it was a continuation.
And Doctor Who has always had "issues" with continuity anyway.
Other shows have re-used the trappings of earlier versions, including the basic premise and original adversary but were, nevertheless, still reboots. The new
Battlestar Galactica had the same premise, the same character names and
Cylons but was a very different show from the original.
Doctor Who is now a continuation, but it is also quite different visually and in narrative style from the original. Necessarily so to meet the demands of a C21 audience that's much more sophisticated than the 60s, 70s or even 80s audience.