1. I disagree. Both PCs & Consoles experience freezes, no such exceptions, even phones & tablets experience freezes, especially if the unit is old. Why? Because I experienced it myself. I played from PS1 to 4, & experienced freezes on those. So saying PC's freeze up while consoles dont is a lie. As per hackers, I've played CoD:MW2 on both PC & consoles, LAN & online, and I tell you, there were hackers not only on PC, but on consoles as well, so consoles aren't safe from the same things that plague PCs. Regardless if its PC or console, both are susceptible to system freezes, the only question is when.
2. Again, I disagree, yes, computers MAY, I emphasize "MAY" ,cost a lot of money to setup, but cost far less to maintain, & lasts for several years if properly cared for. Why? because the parts are easily available compared to consoles. Consoles require dedicated service centers when they experience hardware problems, some even require complete replacement of the unit, which if it is outside warranty, is pretty expensive, PCs on the otherhand, if they experience problems in their hardware, you can just replace the problematic hardware while keeping the other parts as is, plus you can just bring them to any computer shop, unlike consoles. A consoles average lifespan, in effect, its relevance before a new console model comes out, is basically lower, compared to a PC. Until consoles incorporate the ability of being upgraded over the years, the lose to PCs when it comes to maintenance.
On a sidenote: I previously played on my cousin's HP gaming laptop which he gave away before immigrating to another country. Its currently 6yrs old now, before I had to buy a new ASUS gaming laptop. As I said, PCs, & to a lesser extent, gaming laptops, are less expensive to maintain since they have parts that can be easily replaced, while consoles are stuck with what they have.
Additionally, when it comes to price, yes, consoles take the bag since they're cheaper, but then again, they're only relevant for a few years, they have a short lifespan before newer models come out.