Review Detail of The_BP in As An Undead Wizard, I Summon SSS-level Undead Disaster

So we have our MC who gets buffed till infinity cause of his golden finger. That is still alright if you like that kind of novel but at least keep in line about the requirements of his golden finger… Math skills seem to be worse than grade school. examples of this: 1. Energy needed for new skill through golden finger 3, so if he starts at lvl 0 he should get a new skill at lvl 3,6,9,12… Second time he gets a skill is at lvl 5… 2. Converted skill points: He gets each level up 3, so at lvl 5 should be max 15 (if he starts at lvl 0; 12 when he starts at lvl 1). But Author just can’t do this simple math and somehow comes to 34 (1 at lvl 1, 4 at lvl 2, 7 at lvl 3…) So instead of taking the sum of highest level he adds each sum of skill points at each level together which is wrong on so many levels that you doubt the author’s intelligence. 3. Lucky dice roll: Stated a multiplier from 5 – 20 (dice roll) in the earlier chapters. Until where I read (ch15 or so) he didn’t hit below 16 and that was just 3 times. Afterwards it’s only hitting 20s. So it should rather say it multiplies each skill by 20x instead of trying to bring Chance into this. So from world building, character development, background info it is rather well planed but anything involving stats or maths is just garbage. So read it only if you want to read a novel about an OP MC where all reason is thrown out of the window.