[Tell It Right]

"An algae explosion a few hundred million years ago is thought to have been what allowed all human and animal life to evolve, and all told there's only about one and a half billion years between us in terms of evolution."

Basically they're trying to re-write the narrative of natural selection. For a century and a half (since Darwin) the narrative has been that archaeology will eventually discover a gradual speciation from simple organisms to humans across billions of years. Meanwhile the Christian geeks always point to the Cambrian Explosion, an event about 500 million years ago in which 50% to 80% of all known phyla suddenly sprang up in the archaeological record within a brief million years (brief if the expectation is that such speciation would take billions of years).

Basically for decades the Christians have been telling the Darwinists that their math is off by a factor of a thousand and, therefore, any continued allegiance to natural selection must be more religious than scientific.

The wording they're putting into this makes it sound like the Darwinists are changing strategies and trying to make it sound like the Cambrian Explosion is in their favor instead of ours. It's kinda like the Dims trying to tell us over and over that they were always on the right side of race relations (when in reality they literally fought a war to keep blacks in chains while the Christians created the Republican party to free the salves and wound up winning the Civil War).

[BroJoeK]

Tell It Right: "Meanwhile the Christian geeks always point to the Cambrian Explosion, an event about 500 million years ago in which 50% to 80% of all known phyla suddenly sprang up in the archaeological record within a brief million years (brief if the expectation is that such speciation would take billions of years)."

First of all, we're talking about animal phyla, which make up about 2/3 of all phyla including plants, fungi & other non-animals.

Second:

"Since most animal species are soft-bodied, they decay before they can become fossilised.
As a result, although 30-plus phyla of living animals are known, two-thirds have never been found as fossils.[21]"

In other words: it's impossible to say from the fossil record when those 2/3 of phyla first appeared.

Third, the "Cambrian Explosion" is poorly defined and can include up to 100 million years -- from 600 mya to 500 mya:

"The “Cambrian explosion” is a poorly-defined term that refers to a period of time some 600–500 million years ago (“Geon 5” [Hofmann, 1990]) during which the biosphere, as reflected in the eukaryotic fossil record, underwent a great expansion.
Most popularly, the appearance in the fossil record of the first undoubted animals has, especially since the critical studies of Preston Cloud (e.g., 1968), been regarded as truly documenting the evolutionary origins of the animals.
Nevertheless, this straightforward view has rightly been regarded skeptically, for several reasons.
The first of these is that the apparent very rapid appearance of taxa in the record must inevitably imply a period of cryptic evolution before this point (Dawkins, 1998; Cooper and Fortey, 1998).
Secondly, high-profile “molecular clock” estimates of the timing of splits between the various phyla have suggested that animal lineages actually diverged up to 800 Ma or more before their appearance in the fossil record (e.g.,Runnegar, 1982; Wray et al., 1996; see review in Fortey et al., 2002).
This sort of discrepancy clearly demands resolution."

Another report says this:

"In the Cambrian explosion, larger animals with hard parts (i.e. animals which are more readily fossilized) became incredibly diverse but much of their success is due to the evolution of their basic body plan in animals of the Precambrian."

Here is one visualization of the appearances of different body plans pre-Cambrian, Cambrian and post-Cambrian:

Bottom line: "Cambrian Explosion" refers only to animals' fossilized hard body parts appearing in geological strata covering many tens of millions of years.
It says nothing about evolution of soft-bodied animals in the eons preceding or following the Cambrian Explosion.