Newegg reviews should be taken with a very large grain of salt. The vast majority of the people writing those reviews have an axe to grind because of defective product (or in many cases improperly used product: i.e. have a bad cable or a bad NIC or a misconfiguration and blame the switch) and they want to bitch to the world. Unless there's a serious flaw with the product, upwards of 90% of people who have a positive experience with the product do not go back and leave a positive review. They use their product and move on with their lives.
Out of over 15 years using various classes of network hardware, I have had *one* cheapo 4 port netgear switch fail on me, and that was due to a power surge.
If you buy a 24 Port SOHO switch and you find a bad port within the first few days of testing, you just send it back as defective and they send you a new one or give you store credit or whatever. A $700 switch has the possibility of having a dead port too, it happens, thats specifically *why* you dont want to consolidate already expensive devices into a more expensive and more failure prone device. As for clogging up the whole network, thats... not how a switch works at all. Anyone claiming that was either trying to run enterprise webservers off a $200 Netgear switch, or was running two dozen torrents on their desktop and wondering why their connection slowed to a crawl. You're not going to saturate a modern SOHO switch unless, again, you're an enthusiast network engineer building a home lab and specifically *trying* to saturate that switch.
And just FYI, modem/router combos are almost universally reviled in the IT world. They pretty much always suck, and they absolutely cut corners to get them within a consumer friendly price point.
"A jack of all trades is a master of none" rings especially true in networking, but its your network and your money, all we can do is reiterate that it's a bad idea