You can't call your airlines tickets $18k in value because you wouldn't have spent $18k on two airline tickets. My value is the max I'm willing to pay for a ticket, not the price the airline says the ticket I redeemed for is worth. Bloggers say this too and it's disingenuous. For me those tickets would be $5k because that's the most I'm willing to pay for two tickets to Japan.
It's a pain to figure out the best way to get from point A to point B using points. You have to figure out which points to collect,then you have to collect enough of them, then figure out which time of the year to go where the redemptions you can afford are. Then you have to transfer and book on partner airlines. It certainly isn't straightforward.
Yeah, sure, you can do a big trip with two HUGE sign up bonuses of flexible points very easily. Being able to get one high quality trip isn't the same as being able to get many high quality trips, you aren't going to be able to do that a couple times a year (which is what bloggers make it seem like). Travel bloggers promote churning through cards to keep generating more points. You can't just churn through Platinum and CSR applications over and over again. (Platinum is churable to an extent but that's another topic and AMEX is cracking down on that)
Those two sign up bonuses you got are not common and the CSR one won't come back ever again (Chase is losing money on the CSR, look for a devaluation in the future).
Also your points have to be spread out among 5+ different loyalty programs if you want to continue churning credit cards/points/bonuses.
My redemptions are fine, they fit my needs. I have not redeemed a lot yet. I haven't planned a big trip yet. So far all my redemptions have been for a couple nights at a time. You aren't going to get as much value if you simply fly domestic. Flying to Japan may get you the most value but it's worthless if you don't want to fly to Japan.
Anyways, my point of the GP was:
-TPG and most travel blogs are a business that are making money off you.
-Points aren't as simple as "sign up for credit card, fly to Japan," you have to be flexible and usually to get a good redemption you'll have to transfer and book off peak. Availably is limited.
-To get more than 1-2 trips you're going to have to game the system. Sign up, collect bonuses, close card, repeat. You hit a wall with this after a while.
-Credit card companies are cracking down on gamers.
-Some people are better off getting part time job with how much effort they put into gaming the system.
-The rules are always changing.