New trends are definitely impacting housing markets. With the vast influence of BiggerPockets, it would be impossible to deny certain markets have benefitted from never-before-seen appreciation and lack of inventory. In the past three years Zillow started ibuying. Then they just sold off all their inventory. BlackRock has gone through phases of buying single family homes and selling them off.
All of these trends effect various housing markets. COVID, though, in my experience is bigger than all the other influences. Here in Omaha, where I invest, housing has appreciated slow and steady for the last 100 years. No joke. Even through the 2008 recession, Omaha slowly appreciated in housing prices, but people's behaviors started changing suddenly and strangely with COVID. My inventory has doubled in value in 20 months.
The thing is, it doesn't matter why or what happens. If you're on the inside, you stand to gain, and if you're on the outside, you stand to lose. My guess is the divide between wealth and poverty will only increase over the coming years and this new social-media-style real estate investing will contribute to that problem.
(One note on cash buying. Don't wait to raise cash. Find private or hard money lenders to back your offers with cash and buy distressed property. If you use your own money, you'll never get into the game.)