No I'm sure I'm reading it right: the 8 ports on the side are the interesting ones which you can connect your regular wired devices to, as 99.99% of wired consumer networking is on 8P8C Ethernet, not SFP+.
I think it’s a different usage you’re thinking of.
Presumably you’d like 10Gb everywhere, while the article and OP are presumably aiming to link a cor switch or high usage device (NAS) at 10Gb while everything else remains 1Gb.
I'd like anything over 1Gbit/s within the LAN, between all of the LAN clients. 2.5G is a very affordable drop-in compatible upgrade - plain Ethernet cables and PCIe cards - but I've been having problems finding a decent SoHo switch with 2.5G+ ports. The QSW-1105-5T recommended in this thread seems like a good solution.
> ... providing three 10GbE SFP+ ports (with one 10GbE SFP+/RJ45 combo port) and eight Gigabit ports