Once again the media and internet is on fire about a security flaw in our computers. This time under the name "Meltdown" and "Spectre".
As usual, they neglect to tell a few little details that would make people lose their apatite for the news breaking the world is coming to an end story.
First of all, a very skilled hacker would have needed physical access to the computer/server to attack the system. At this point, 99.9999% of the audience loses interest.
The flaw was discovered 6 months ago and was shared with chip manufacturers developers of software. At the same time, the countdown for publication of this bug started and was set to expire on January 9th for the official announcement. At which time there would have been enough time to fix the issue witch was mostly archived by all the responsible parties. When updates started to happen some "researchers" looked into what was being fixed and found out the reason why and choose to seek media attention 5 days before the official announcement. Whoopeedoo big deal the problem is already fixed let's move on.
Chips will perform a bit less but since your Mac runs mostly idle, you won't notice the difference.