Decreasing stealth properties does not render the F-35 ineffective in a variety of respects, given that the F-35 is built for heavy bombing as well as reconnaissance missions.
Thinking of these together, an F-35 could use its electro/optical-infrared (EO-IR) cameras and surrounding sensors to find far-away ground targets autonomously, and then attack them from the air with bombs.
The aircraft does have an internal weapons bay, intended to enable attacks while preserving a stealth configuration, yet a full-force attack will mean using the external pylons to enable what many call the F-35’s “beast mode.”
Video Above: Colonel Michael Stefanovic, Director of the Strategic Studies Institute for the Air Force sits down for an exclusive interview with Kris Osborn
An interesting report from the Aviation Geek Club describes beast mode as arming an F-35 with “six inert 500-pound GBU-12 laser-guided bombs, four loaded externally on the wings and two internally in the weapons bay, as well as an AIM-9 training air-to-air missile.”
Naturally, this means an F-35 would increase its radar signature and decrease the effectiveness of its stealth properties, however, such a configuration would be possible in combat environments wherein the United States has already achieved air supremacy.