"is apparently because" is a correct and usable phrase in written English.
It is used to indicate that something appears to be true based upon evidence or logical deduction. For example, "The species has become increasingly rare is apparently because of habitat destruction."
This is apparently because he is "effectively running a business".
This is apparently because the operation causes metabolic changes that lower blood glucose levels beyond what weight loss alone can accomplish.
This is apparently because his father, Jerome Anderson, is one of the game's highest-profile agents and was involved in Venky's takeover of Blackburn Rovers, whom Anderson junior will join in the summer.
One of the reasons that Google is building its British headquarters in King's Cross, a once-dodgy area next to a big London railway terminus, is apparently because it will be on the doorstep of a new fashion college and the relocated campus of Central St Martin's, a famous art school, making the area feel cool and cutting-edge.
This is apparently because it is difficult to apply paint smoothly over a plummet (lead tin alloy) drawing [56].
This is apparently because the focusing of waves by a finite parabolic reflector, even a semi-transparent one, is essentially a high-frequency or quasi-optical effect.
Most triadic people are the way they are, apparently, because they were unloved as children.
It is telling that both times Williams fled an arrest warrant, it was apparently because someone sympathetic had tipped him off.
The hesitation was apparently because Palm Beach County had asked the State Supreme Court for clarification of its own particular circumstances and wanted to wait until it received an answer.
The vote for a rate rise was apparently because inflation is set to rise because wage inflation is going to rise, even though it is moving fast in the opposite direction.
