Having had a quick canter through the article I wouldn't be so sure, his conclusion seems to argue for a mixed force of LO & 4th Gen aircraft:
The ATF’s overly specialized design constituted a fundamental flaw in the uncertain post–Cold War environment. The Air Force subsequently missed the best opportunity to adapt the F-22 when it issued the EMD contract without modification to ATF requirements. Throughout EMD, the service remained overly focused on the F-22 at the expense of A-10, F-15E, and F-16 recapitalization. When acquisition eventually shifted to the F-35, the Air Force largely ignored its F-22 experience and failed to plan for inevitable developmental problems with the F-35. Despite massive cost overruns and schedule delays, the Air Force continues to hope that the F-35 can solely recapitalize 1,770 aging F-15Es, F-16s, and A-10s. However, continuing developmental problems and the emerging national fiscal crisis threaten to undermine this strategy.
Although stealth is a powerful enabler for offensive systems, its greatest advantage lies in its ability to dramatically increase aircraft survivability against radar-dependent threats. Consequently, stealth’s utility depends on the presence of those threats. By insisting on acquiring only stealth fighters (regardless of the cost), the Air Force assumes that future adversaries will not counter stealth technology and ignores the fact that many air combat operations continue to occur in low-threat environments. For example, allied fourth-generation fighters operated freely over large portions of Iraq (both in 1991 and 2003),
Serbia, and Libya from the beginning of those conflicts. Future hostilities likely will continue this long-standing historical trend, and currently fielded stealth assets can mitigate risk to operations in high-threat environments where fourth-generation fighters are most
vulnerable.
An all-stealth Air Force fighter fleet deserves reconsideration even today. Stealth technology demands significant trade-offs in range, security, weapons carriage, sortie generation, and adaptability. Stealth provides no advantage in conflicts such as those in Afghanistan or Iraq
(since 2003), and (despite its obvious utility) it cannot guarantee success in future struggles with a near-peer adversary. Most importantly, the cost of F-22s and F-35s threatens to reduce the size of the Air Force’s fielded fighter fleet to dangerously small numbers, particularly
in the current fiscal environment. These facts suggest that the Air Force should reconsider its long-standing position that fifth-generation fighters are the only option for recapitalizing its fighter fleet.