Here's what my list would be: (full time for 7 years, now building a house so I don't need full time RVing ever again).
1. RV parks are full, they converted almost all the nightly sites to monthlys to guarantee revenue. RV Parks are the new mobile home park but with monthly RVers who got wind of the "Gone with the Wynns" blog and cheaper cost of living.
2. RV Park nightly rates have literally gone from $35 a night to $70 a night during the 2020s -> 2023s. A lot of the time you're the one that showed up paying $70 per day and all the loud blubs next door are paying $10 per night at the monthly rate.
3. Free camping areas are getting shut down after sites like "campendium" have advertised them to everyone. Most of the problems are related to illegal gray and black tank dumping on public lands.
4. Quartzsite is an absolute shit-show now, it's still probably worth going, but it's crowded. I wouldn't be surprised if they shut down the free areas in the next few years over the same gray/black tank issues.
5. Internet problems are 1000% solved with Starlink now.
6. Solar does not power the A/C. To power the A/C you need 10+ residential solar panels and a $2000 inverter on a 48 volt system. There are ways to have a 48 volt battery and down-regulate to 12v for the rest of your RV. People that run A/C off solar have "special ways" to have that many residential panels, typically involving fold outs and trailers.
7. Gas prices have skyrocketed in CA so it's not worth going anywhere near the state - let alone find a park that's cheap.
RV Progression
Cedar Creek 5th Wheel (2 years) -> Arctic Fox TC 1150 (5 years) -> Alliance Paradigm (1 year) -> building house