PHEV in my opinion is a really dumb idea. It got popular, because it was an easy way for car manufacturers to continue making large SUVs and adhere to even stricter fuel efficiency restrictions, while also benefitting from generous state subsidies. Now that those subsidies are either scaled down or completely removed the PHEV sector is shrinking fast.
The benefit of EV is not only that you can charge at your own garage but that you also have lower maintenance cost and even if the upfront cost is higher, your cost over time lowers the more you drive it and depending on electricity prices, etc. you can break even with ICE.
With PHEV, the maintenance cost is higher than ICE, because at the end you need to service and maintain two engines.