In my testing that looks like activation by manual license file no longer works.
Unity Editor version: 2022.1.0f1 (369b620af41c)
Branch: 2022.1/release
Build type: Release
Batch mode: YES
System name: Linux
Distro version: #1 SMP Debian 5.10.46-4 (2021-08-03)
Kernel version: 5.10.0-8-amd64
Architecture: x86_64
Available memory: 64189 MB
[LicensingClient] Channel doesn't exist: "LicenseClient-root"
[Licensing::Module] Successfully launched the LicensingClient (PId: 66) [LicensingClient] Channel doesn't exist: "LicenseClient-root"
[Licensing::Module] Timed-out after 10.00s, waiting for channel: "LicenseClient-root"
IPC channel to LicensingClient doesn't exist; aborting
Checking for leaked weakptr: Found no leaked weakptrs.
Memory Statistics:
[ALLOC_TEMP_TLS] TLS Allocator StackAllocators :
[ALLOC_TEMP_CoreBusinessMetricsCache] Initial Block Size 64.0 KB Current Block Size 64.0 KB Peak Allocated Bytes 0 B Overflow Count 0
[ALLOC_TEMP_Profiler.Dispatcher] Initial Block Size 64.0 KB Current Block Size 64.0 KB Peak Allocated Bytes 0 B Overflow Count 0
[ALLOC_TEMP_AssetGarbageCollectorHelper] x 11 Initial Block Size 64.0 KB Current Block Size 64.0 KB Peak Allocated Bytes 0 B Overflow Count 0
[ALLOC_MEMORYPROFILER] Requested Block Size 1.0 MB Peak Block count 1 Peak Allocated memory 4.3 KB Peak Large allocation bytes 0 B
##utp:{"type":"MemoryLeaks","version":2,"phase":"Immediate","time":1652427993909,"processId":52,"allocatedMemory":92892,"memoryLabels":[{"Default":530},{"Thread":128},{"Manager":6738},{"Serialization":40},{"BaseObject":12056},{"String":4704},{"DynamicArray":432},{"HashMap":3668},{"Utility":1024},{"PoolAlloc":10336},{"GI":3248},{"VR":80},{"EditorUtility":256},{"RestService":1022},{"UnityConnect":28584},{"Collab":25},{"ProfilerEditor":20021}]}
Unity Editor version: 2021.2.16f1 (559fc0ec6670)
Branch: 2021.2/staging
Build type: Release
Batch mode: YES
System name: Linux
Distro version: #1 SMP Debian 5.10.46-4 (2021-08-03)
Kernel version: 5.10.0-8-amd64
Architecture: x86_64
Available memory: 64189 MB
[LicensingClient] Channel doesn't exist: "LicenseClient-root"
[Licensing::Module] Successfully launched the LicensingClient (PId: 65)
[LicensingClient] Channel doesn't exist: "LicenseClient-root"
[Licensing::Module] Timed-out after 5.00s, waiting for channel: "LicenseClient-root"
IPC channel to LicensingClient doesn't exist; falling back to Legacy licensing
Load manual activation license file.
LICENSE SYSTEM [2022513 7:39:21] Load license file from: UnityLicenseFile.ulf
LICENSE SYSTEM [2022513 7:39:21] Next license update check is after 2022-05-13T20:10:34
IPC channel to LicensingClient doesn't exist; falling back to Legacy licensing
Load manual activation license file.
That does not happen anymore.