I don't know what others here think. But these fanboy art work shouldn't be posted, unless it's sanctioned by the government, SOEs and or credible think tanks.
That particular artist has made quite a few good quality and accurate CGIs of existing vessels, and it's obvious that certain CGIs are meant to be deliberately speculative on the artist's part.
I think having speculative CGIs is fine if it's within reason. For example a "075A with ski jump ramp" is within the realm of being sensible.
If it's "flying aircraft carrier with fusion reactors and railguns" or something then obviously that would be wildly inappropriate.