Yes. I prefer e-tickets and mostly do not use the LU transfer when crossing London, I tend to prefer bus, walk or "Sadiq cycle" to enjoy my time above ground, so I mostly don't care if it's offered or not. On the odd occasion when I was wanting to use the Tube I would just opt for a paper ticket.
I don't like the way people think I should not have that option other than by splitting tickets.
With respect, I simply don't believe that you have a majority view on cross-London transfer. Most people want to get somewhere in the shortest time rather than take their time to cross London. I accept that Euston to St Pancras or Kings Cross is best done above ground but most other transfers aren't.
Just because you like e-tickets is no reason to remove validity of cross London transfer for the majority. The danger here appears to be that if e-tickets become the normal that cross London transfer will be lost.
However, it should also be noted that, when PAYG replaces the current fare structure around London, extension of the current principles for fares within London will lead to the mixed-mode premium applying for such journeys - look up the paper fares for Redhill to St Albans (Any permitted +) and the Contactless fares.
Super off-peak day return (weekend only)
£12.90
Off peak day return
£19.30
Off-peak single fares on Contactless
£10.80 direct
£13.20 using the underground
So, not only is Contactless return more expensive in both cases than an off-peak day return, going via Victoria is more expensive. That is the future.