Ten plus years ago things had been pretty stable for a long time. 1080p with 3D support was pretty-much the video standard. For sound, we had HD-audio in the forms of Dolby True-HD and DTS HD MA. HDMI control was pretty-much established but in 2009 when your 1910 was released HDMI ARC was a brand new feature and not yet on many TVs or AV receivers. A quick look at the back panels of your 1910 (£450 at launch) versus today's £450-£500 Denon shows you just how much video and audio has changed.
Of course the back panel doesn't tell the whole story. A lot of the major changes have been in standards and software. We have ARC and eARC, Audyssey room EQ, Internet and streaming, multiroom music, app control not to mention a whole host of audio and video standards changes that are still going on: UHD, HDR, WCG, 120Hz, VRR, Atmos etc.
Outside of the confines of the AV market there have been wider changes in consumer preferences that have made a big splash. Those ripples are now rocking the AV receiver boat.
Ten years ago the sound bar was mostly polarised as either a budget TV speaker or something expensive but ultimately very much more limited in features and performance compared to an AV receiver and speakers. That's changed in that sound bars have pretty much replaced a lot of the AV receiver market, hence why Pioneer and Onkyo joined forces but too late to save the businesses. Sony as retreated too with no replacement for the popular STR-DN1080. Denon's and Yamaha's ranges have both shrunk considerably in the budget sphere.
All in all then, yes, you're going to have to spend a chunk of cash. That's where the market is now.